TY  - BOOK
AU  - Kendrick John W
AU  -  Grossman Elliot S
TI  - Productivity in the United States :  Trends and cyo   
U1  - X:89P:(B).73. N7, Mo 
PY  - 1980///
CY  - London
PB  - John Hopkins University Press       
KW  - Production Engeeniring
ER  -