TY  - BOOK
AU  - Christ John M
TI  - Concept And Subject Headings :   Their relation in infotmation retrieval and library science
U1  - 2:55, L2-;2 (2) 
PY  - 1972///
CY  - Metuchen
PB  - Scarecrow Press      
KW  - LIBRARY SCIENCE
ER  -