TY  - BOOK
T1  - A primer on productivity
A1  - Fabricant, Solomon
LA  - English
PP  - New York
PB  - Random House
YR  - 1969
UL  - https://tuklas.up.edu.ph/Record/UP-99796217602301306
OP  - 206
CN  - HD 57 F32
KW  - Labor productivity.
ER  -