TY  - BOOK
AU  - Ruttan Vernon W Ed.
TI  - Sustainable agriculture and the environment:  Persp   
SN  - 0813385075
U1  - X9(J):(G:55), N2 
PY  - 1992///
CY  - Boulder
PB  - Westview Press         
KW  - Agriculture Labour
N1  - Bib p. 185-89
ER  -