The planning of library and documentation services /
by C. V. Penna.
- 2d ed. rev. and enl. / by P. H. Sewell and Herman Liebaers.
- Paris : Unesco, 1974.
- 158 p. : ill. ; 21 cm.
- Unesco manuals for libraries ; 17 .
First ed. published in 1967 under title: Planning library services. "COM.70/IV.17b/A."