TY  - BOOK
AU  - Evans,L.T.
TI  - Crop evolution, adaptation, and yield
SN  - 0521295580
U1  - 633 20
PY  - 1993///
CY  - New York
PB  - Cambridge University Press
KW  - Crops
KW  - Crop yields
N1  - Includes bibliographical references and index
ER  -