TY  - BOOK
AU  - Hawkes, J. G.
TI  - Potato collecting expeditions in México and South America
U1  - 635.21 
PY  - 1944///
CY  - Cambridge, England
PB  - Imperial Bureau of Plant Breeding and Genetics
KW  - Papa
KW  - América Latina
KW  - Clasificación
KW  - México
N1  - 26-162; La biblioteca tiene : v.2 Systematic classification of the collections
ER  -