TY  - BOOK
AU  - Shaffer, Kenneth R
TI  - The book collection: policy case studies in public and academic libraries 
AV  - Z 689 S4
PY  - 1961///
CY  - Hamden, Conn.
PB  - String
KW  - Adquisiciones (Bibliotecas)
KW  - Evaluación
ER  -