TY  - BOOK
AU  - J. Butterworth
TI  - Productivity now
SN  - 08 0130216
U1  - 658 
PY  - 1969///
CY  - Paris
PB  - Pergamon Press
N1  - J. Butterworth: Productivity now.  Paris.  Pergamon Press, 1969. 08 0130216--(658BUT)
ER  -