Cataloger's Reference Shelf
Map Cataloging Manual
Cataloger's Reference Shelf
Map Cataloging Manual
Subject Headings Decision Table:
|
|
Map subjects: |
Existing headings: |
Headings used: |
|
a |
A, B |
A, B |
A, B |
|
b |
A, B |
A, B, Z (Z = A + B) |
Z not A, B, Z |
|
c |
A, B |
A, B, Y (Y = A + B + ...) |
A, B unless the extra scope in Y is so little as to be considered negligible |
|
d |
A, B, C |
A, B, C, X (X = A + B + C) |
X |
|
e |
A, B, C |
A, B, C, Q (Q = A + B + C + ...) |
A, B, C if the extra scope in Q is considerable Q if the extra scope is small |
|
f |
A, B, C, D |
A, B, C, D, R (R = A + B + C + D + ...) |
R |
|
g |
A, B, C, D |
A, B, C, D, V (V = A + B + C) |
V, D |
Note the differences between e and f. Three distinct subjects in a work usually receive the broader subject heading, unless the heading is very much broader than the combination of the 3 individual headings. Four subjects always receive the broader subject heading, regardless of the extra scope.