TY  - GEN
AU  - International Board for Plant Genetic Resources IBPGR
TI  - Practical constraints affecting the collection and exchange of samples of wild species and primitive cultivars. Secretariat Consultation 14-15 March 1983
U1  - 631.5 
PY  - 1983///
CY  - Rome
PB  - IBPGR
ER  -