TY  - BOOK
ED  - Assembly of Behavioral and Social Sciences (U.S.)
TI  - Measurement and interpretation of productivity
SN  - 0309028981
U1  - 658.5 21
PY  - 1979///.
CY  - Washington: 
PB  - National Academy of Sciences, 
KW  - Industrial productivity
KW  - Measurement
ER  -