Page 109 - Cataloging and Classification for Library Technicians, 2nd Edition

Classification 95

FIGURE 6.7. Cut ter Numbers Devised by the Library of Con gress

CUTTER TABLE
Library of Con gress book numbers are composed of the ini tial letter of the main
head ing fol lowed by Arabic nu mer als rep re sent ing the suc ceed ing let ters on the
fol low ing ba sis:
1. Af ter ini tial vow els
for the 2nd let ter: b d l,m n p r s,t u-y
use num ber: 2 3 4 5 6 7 8 9
2. Af ter ini tial let ter S
for the 2nd let ter: a ch e h,i m-p t u
use num ber: 2 3 4 5 6 7-8 9
3. Af ter ini tial let ters Qu
for the 3rd let ter: a e i o r y
use num ber: 3 4 5 6 7 9
for names be ginning: Qa-Qt
use num bers: 2-29
4. Af ter other ini tial con so nants
for the 2nd let ter: a e i o r u y
use num ber: 3 4 5 6 7 8 9
5. When an ad ditional num ber is pre ferred
for the 3rd let ter: a-d e-h i-l m n-q r-t u-w x-z
use num ber: 2* 3 4 5 6 7 8 9
*(optional for 3rd let ter a or b.)
Letters not in cluded in these ta bles are as signed the next higher or lower num-
ber as re quired by pre vious as signments in the par ticular class.

As a gen eral prac tice, the Li brary of Con gress has added the pub li-
cation date to the clas sification num ber and the au thor num ber. For
example, a com plete call num ber may look like this: Z693.W94
1991. Z693 is the LC classification num ber, rep resenting the sub ject
cat a log ing, .94 is the au thor num ber for Wynar, and 1991 is the pub -
lication date. In the MARC for mat, the LC call number is found in the
field with tag num ber 050. For a lo cally as signed LC call num ber,
090 is the proper field.
When as sign ing clas si fi ca tion num bers and Cut ter num bers, the li-
brary tech nician must take time to read the in structions carefully and
follow the di rections pre cisely. It is both in teresting and chal lenging.
With prac tice and ex perience, the job of classifying ma terial will fall
into its log ical se quence.