TY  - BOOK
AU  -  Wellisch, H.H.
TI  - The Preas index system,  principles application and prospects,  proceedings of the international Precis worksohp sponsored by the college of library and imformation services of the university of Marulqnd 
U1  - 29.5 
PY  - 1967///
CY  -  New York
PB  -  H.W. Wilson
KW  -  Information organization ; Indexing
ER  -