TY  - BOOK
TI  - Economics of microfilming and document reproduction
U1  - 338.477 781 S28E 
PY  - 1969///
PB  - Great Britain
KW  - MICROPHOTOGRAPHY -- ECONOMIC ASPECTS -- CONGRESSES
KW  - ES
KW  - MICROPHOTOGRAPHY -- ECONOMIC ASPECTS -- CONG
KW  - PHOTOCOPYING PROCESSES -- ECONOMIC ASPECTS
ER  -