TY  - BOOK
AU  - Krull, Charles F.
AU  - Borlaug, Norman Ernest.
TI  - The utilization of collection in plant breeding and production
KW  - Plantas
KW  - Colección y preservación
KW  - Mejoramiento
N1  - Sobretiro de : Frankel, O. H. Genetic resources in plants: their exploration and conservation. London, Blackwell, 1970, pp. 427-439
ER  -