TY  - BK
AU  - Pettygrove,G.S.
TI  - Como llevar a cabo un experimento agrícola
PY  - 1971///
CY  - Maryland, MD (USA)
PB  - Volunteers in Technical Assistance, 
KW  - Crop management
KW  - AGROVOC
KW  - Data collection
KW  - Experiments
KW  - Organization of research
KW  - Research policies
KW  - Research projects
KW  - Statistical analysis
ER  -