Page 108 - Cataloging and Classification for Library Technicians, 2nd Edition

94 Cataloging and Classification for Library Technicians
Library of Con gress Sub ject Head ings, which was dis cussed in Chap -
ter 5, may be used as an in dex be cause sug gested LC num bers are
printed af ter al most all sub ject headings. The Li brary of Con gress
also pub lishes Sub ject Cat a loging Man ual: Clas si fi ca tion as a prac ti-
cal, time-saving, how-to man ual that helps cat alogers as sign LC clas -
si fi ca tion num bers. Some prin ci ples of clas si fi ca tion, sim i lar to those
discussed in Chap ter 5, in clude: classifying a work by its spe cific
subject, us ing the most spe cific num ber avail able; as signing num bers
according to in structions printed in the sched ules; and classifying a
work with a broader sub ject if the work deals with sev eral sub jects.
The LC sched ules are kept up to date through the quar terly pub li-
ca tion Li brary of Con gress Clas si fi ca tion—Ad di tions and Changes.
A CD-ROM for mat of the LC clas sification, called Clas si fi ca tion
Plus, produced by the Library of Con gress, is also avail able. This is
convenient and ef ficient be cause it allows a search by key words,
clas si fi ca tion num bers, prox im ity op tions, Boolean op er a tions, etc.
However, all sched ules are not yet au tomated, so the latest CD-ROM
version con tains only twenty-seven sched ules out of forty-six. Ad di-
tional sched ules will be added as they be come available through out
the year. Another avail able elec tronic for mat is the Super LCCS CD,
produced by Gale Re search Com pany.

BOOK NUMBER FOR THE LCCS

The pur pose of cuttering is to cre ate a unique call num ber by com -
posing a log ical and or derly subarrangement within a class. The main
element of the LC call num ber consists of one to three cap ital let ters
followed by a one- to four-digit num ber with up to three dec imal
places, for ex ample, HF5549.5. A top ical Cut ter num ber is added to
the clas si fi ca tion num ber if an ex traor di narily pre cise iden ti fi ca tion
is re quired, for ex ample, HF5549.5.T7. The .T7 stands for train ing in
this ex ample; it is not the au thor number.
The Li brary of Con gress has de vised its own method of as signing
the book num ber, also called au thor num ber or Cut ter num ber. It
resembles the Cutter num ber from the Cut ter-Sanborn ta ble, but is
less com plicated be cause all the de tails are in cluded and coded by the
LC clas si fi ca tion num ber it self, as de scribed pre vi ously. Fig ure 6.7
shows the cut ter num bers de vised by the Li brary of Con gress.