TY  - BOOK
AU  - Vanloon Gary W, and others
TI  - Agricultural sustainability:  Strategies for assessment   
SN  - 0761933409
U1  - U672(J):(G:55), P5 
PY  - 2005///
CY  - Delhi
PB  - Sage Publications         
N1  - Bibliography: p273-276
ER  -