TY  - BOOK
AU  - Christ,John M
TI  - Concepts and subject headings: their relation in information retrieval and library science 
SN  - 0810804913
PY  - 1972///
CY  - Metuchen, N.J.
PB  - Scarecrow Press
KW  - Subject headings
KW  - Social sciences
KW  - Abstracting and indexing
N1  - Bibliography : p. 172-174
ER  -