oclc online computer library center comparing ddc and lcc shelf arrangement julianne beall assistant...

OCLC Online Computer Library Center

Comparing DDC and LCC shelf arrangement

Julianne Beall

Assistant Editor, DDC

Library of Congress

July 4, 2006 Vienna


Outline

Notation

Differences in arrangement of material

Practical considerations


Main classes and subclasses

DDC: 10 main classes

Each with up to 10 subclasses

LCC: 21 main classes

Each with up to 20+ subclasses


DDC class numbers

Decimal numbers

Logically, the decimal point belongs at the start of the number, though for ease of reading it is placed after the third digit

Only rare, optional recommendations to subarrange alphabetically, e.g., for name or make of specific named passenger automobiles


LCC class numbers

1-3 letters

Followed by whole numbers 1-9999

Followed in many cases by decimal extensions

Followed in many cases by subject Cutter numbers


Abridgment

DDC class numbers can be abridged at many levels to fit different sized collections

LCC notation cannot easily be abridged (except to cut back to the initial 1-3 letters)


DDC and book numbers

Methods of subarranging alphabetically by author are not part of DDC proper

Many different methods are used by Dewey libraries; no one method is prescribed


LCC and book numbers

A specific kind of Cutter number is prescribed for subarranging alphabetically by author


LCC subject Cutter lists: example

SD397.A-SD397.Z Forestry—Sylviculture—Natural history of forest trees—Description, value, and culture of individual species or groups, A-Z . . . .

SD397.M3 Maple

Maple, Sugar see SD397.S775

SD397.M4 Mesquite

Metasequoia glyptostroboides see SD397.D37


LCC subject Cutter lists: example (2)

SD397.M65 Mopane

SD397.M84 Mulanje cedar

SD397.P6112 Pinus patula

SD397.P61124 Pinus pinea. Italian stone pine

SD397.P6114 Pinyon pines

SD397.P6115 Ponderosa pine


DDC classified arrangement of kinds of trees in forestry

630 Agriculture

634 Orchards, fruits, forestry

634.9 Forestry

634.97 Kinds of trees

634.972 Dicotyledons

634.973 Other dicotyledons

634.974 Monocotyledons

634.975 Gymnosperms


634.972 Dicotyledons

634.9721 †Oaks

634.9722 †Maples

634.9723 †Poplars

634.9724 †Chestnuts

634.9725 †Beeches

634.9726 †Birches

634.9727 †Lindens

634.9728 †Elms

† Add as instructed under 634.97


634.973 Other dicotyledons

Add to base number 634.973 the numbers following 583 in 583.2-583.9 , e.g., eucalyptus 634.973766

634.973+[583]766= 634.973766

583.766 Eucalyptus (Gum trees)


634.975 Gymnosperms (1)

634.9751-634.9758 Coniferous trees

634.9751 †Pines

634.9752 †Spruces

634.9753 †Hemlocks

634.9754 †Firs



634.975 Gymnosperms (2)

634.9755 †Cypresses

634.9756 †Cedars

634.9757 †Larches

634.9758 †Sequoias



634.9759 Other gymnosperms

Add to base number 634.9759 the numbers following 585 in 585.2-585.9 , e.g., kauris (dammar pines) 634.97593

634.9759+[585]3=634.97593

585.3 Podocarpaceae, Araucariaceae, Cephalotaxaceae (plum-yew family)

Including Huon pine, kauris (dammar pines) . . . .


Example of DDC and LCC class numbers

Genetic variation in seedling progeny of ponderosa pine provenances

DDC: 634.97517

LCC: SD397.P6115


More on DDC example

634.9751 Pines + 7 Varieties and kinds from add table at 634.97 = 634.97517

Libraries that have few books in this area can drop the final 7 and put all the books about pines together

The abridged DDC stops at 634.9 Forestry


More differences in arrangement of material

There are so many differences that I cannot possibly list them all; I can only give some examples.


CLASS G - GEOGRAPHY. ANTHROPOLOGY. RECREATION (1)

G1‑9980 Geography

GA1‑1776 Mathematical geography. Cartography

GB3‑5030 Physical geography

GC1‑1581 Oceanography

GE1‑350 Environmental sciences


CLASS G - GEOGRAPHY. ANTHROPOLOGY. RECREATION (2)

GF1‑900 Human ecology. Anthropogeography

GN1‑890 Anthropology

GR1‑950 Folklore

GT1‑7070 Manners and customs (General)

GV1‑1860 Recreation. Leisure


DDC in 300s corresponding to LCC G

300 Social sciences

301 Sociology and anthropology (GN)

304 Factors affecting social behavior

304.2 Human ecology (GF)


DDC in 300s corresponding to LCC G (2)

330 Economics

333 Economics of land and energy

333.7 Land, recreational and wilderness areas,

energy

Class here interdisciplinary works on the environment (GE)



390 Customs, etiquette & folklore (GT)

398 Folklore (GR)



500 Science

520 Astronomy and allied sciences

526 Mathematical geography

(GA)

Class here cartography (GA)



550 Earth sciences & geology

551 Geology, hydrology, meteorology

551.4 Geomorphology and hydrosphere

551.46 Hydrosphere and submarine geology Oceanography

(GC)



700 Arts & recreation

790 Recreational and performing arts (GV)

790.1 General kinds of recreational

activities

Class here leisure (GV)



900 History & geography

910 Geography and travel (G)

910.02 The earth (Physical geography)

(GB)


GV Recreation. Leisure (1)

363.14 Hazards in sports and recreation

790-790.1 Recreation. . . General kinds of recreational activities

791.1-791.3 Traveling shows; minstrel shows; circuses

791.8 Animal performances


GV Recreation. Leisure (2)

792.62 Dancing

792.78-792.8 Theatrical dancing; ballet and modern dance

793-797 Indoor games and amusements; athletic and outdoor sports and games; aquatic and air sports

799.3 Shooting other than game


Individual literary authors and works in DDC (1)

Classed by language, form, and literary period; no class numbers devoted to specific authors. Examples:

831.914 German poetry—1945-1990

832.914 German drama—1945-1990

833.914 German fiction—1945-1990



Individual works by the same author in more than one form are separated according to form

Comprehensive collections of an author’s works are classed with the author’s predominant form, if there is a predominant form



If there is no predominant form, comprehensive works are classed in a special number for individual authors not limited to or chiefly identifiable with one specific form. Example:

838.91409 German authors of the period 1945-1990 not identified with a specific form


Individual authors and works in DDC (4)

You can use book numbers to bring together works of an author in the same form and editions of a work. There are several ways to do it; here’s one.

Example: Böll, Heinrich, 1917-

833.914.B6333z 1963

Der Zug war pünktlich


Individual literary authors and works in LCC (1)

LCC has specific class numbers devoted to specific authors

Works in all forms by the author are classed in subdivisions of the number


Individual literary authors and works in LCC (2)

Example:

German literature—Individual authors or works—1860/70-1960—B-Bz—Böll, Heinrich, 1917-

PT2603.O394

PT2603.O394Z45 1973

Der Zug war pünktlich


Editions of DDC and LCC

DDC:

4 volumes in full edition

1 volume abridged edition

Full and abridged web versions

LCC:

41 volumes

No abridged edition

Full web version


Translations

DDC has been translated into more than thirty languages (not all of these are current)

There is a current German translation of the full edition, but no German translation of the abridged edition

There is a web version of the German full edition

There is no translation of all of LCC

There are translations of some parts into a few languages (e.g., Spanish), but I am not aware of any German translation


Up to date

Both DDC and LCC are actively being kept up to date


Users of DDC

Used by a wide range of sizes and types of libraries in 138 countries

School libraries

Public libraries

Special libraries

College and university libraries


Users of LCC

Primarily large and medium-sized academic and research libraries in English-speaking countries

Some specialized collections that are part of a larger general library, e.g., a university law library, may be classed in LCC when the rest of the collection is not


A final practical consideration

What classification is used by the majority of the libraries whose records you want to use for copy cataloging?


Resources and links

ddc-deutsch:

http://www.ddc-deutsch.de/

Library of Congress Cataloging Distribution Service:

http://www.loc.gov/cds/classif.html

OCLC Dewey Services:

http://www.oclc.org/dewey/

oclc online computer library center comparing ddc and lcc shelf arrangement julianne beall assistant...

Documents

forestry slide

ddc library of congress

p6115 slide

prescribed slide

d37 slide

vienna slide

leisure slide

ddc example