TY  - BOOK
AU  - Whitehead Judy A
TI  - Empirical production analysis and optimal technoloy
U1  - X:89P:(B), N0 
PY  - 1990///
CY  - Avebury
PB  - Aldershot          
KW  - Production Engeeniring
N1  - Bib p 305-11 Appendix p 275-303
ER  -