TY  - BOOK
AU  - Mccolvin Lionel R
TI  - Public library extension
T2  - Unesco public library manuals (Unesco publications, 375); 2
U1  - 2:2, J0 J02-J04 (2D) 
PY  - 1950///
CY  - Unesco
PB  - Unesco Paris      
KW  - LIBRARY SCIENCE
ER  -