TY  - BK
AU  - Gates,J.P.
TI  - Tracing the evolution of organic/sustainable agriculture. A selected and annotated bibliography
T2  - NAL Bibliographies and Literature of Agriculture
PY  - 1988///
CY  - Beltsville, MD (USA)
PB  - USDA. National Agricultural Library, 
KW  - Agriculture
KW  - AGROVOC
KW  - Cropping patterns
KW  - Evolution
KW  - Information retrieval
KW  - Information Services
KW  - Organic compounds
ER  -