TY  - BOOK
AU  - Pearson,C.J
TI  - Control of crop productivity
SN  - 0125482809
PY  - 1984///
CY  - Sydney
PB  - Academic Press
KW  - Crop yields
KW  - Addresses, essays, lectures
KW  - Agricultural productivity
N1  - Includes bibliographical references and index
ER  -