Reaching readers techniques of extending library services

Manylion Llyfryddiaeth
Awdur Corfforaethol:	Library Institute. University of California, 1947
Fformat:	Llyfr
Iaith:	Saesneg
Cyhoeddwyd:	Berkeley University of California Press 1949
Pynciau:	Library extension. Loeckel, Carleton Buns, ed.