TY - BK AU - Evans,L.T. TI - Crop evolution, adaptation and yield SN - 0-521-22571-X U1 - 633 PY - 1993/// CY - Cambridge (United Kingdom) PB - Cambridge University Press, KW - Adaptation KW - Crop yield KW - AGROVOC KW - Crops KW - Cultivation KW - Food supply KW - Plant production KW - Plant breeding ER -