TY  - TH
AU  - Becerril Garcia,J.
TI  - The paradox between crop genetic resources conservation and crop yield increases by small-scale farmers in Mexico:  the maize case
PY  - 2005///
CY  - Catalunya (Spain)
PB  - Universitat Autonoma de Barcelona, 
N1  - Nationality: MX; Thesis (M. Sc.)
ER  -