TY  - BOOK
AU  - Wellisch,Hans
AU  - Thomas D. Wilson
TI  - Subject retrieval in the seventies:  : new directions proceedings of an International symposium held at the centre of adult education University of Maryland College Park May 14 to 15, 1971
AV  - Z695.S89 
PY  - 1972///
CY  - Westport
PB  -  : Greenwood Publishing Company
KW  - Subject cataloguing
KW  - Congresses
KW  - Classification
KW  - Book
KW  - Information retrieval
ER  -