TY  - BK
AU  - Hawkes,J.G.
TI  - Crop genetic resources field collection manual
PY  - 1980///
CY  - Rome (Italy)
PB  - International Board for Plant Genetic Resources (IBPGR), 
KW  - Plant collections
KW  - Genetic resources
KW  - AGROVOC
KW  - IBPGR
ER  -