TY  - BOOK
AU  - Penna,C.V.
AU  - Sewell,P.H.
AU  - Liebaers,Herman
TI  - The planning of library and documentation services
T2  - Unesco manuals for libraries
U1  - 025.5/P412p 
PY  - 1967///, 1972
CY  - Paris
PB  - Unesco
KW  - Documentation
N1  - Bibliography and appendixes at the end
ER  -