TY  - BOOK
ED  - BIOTOL (Project)
ED  - Open Unversiteit (Heerlen, Netherlands)
TI  - Crop productivity
T2  - Biotechnology by Open Learning
SN  - 0750605626
AV  - S494.5.P75 C75 1994
PY  - 1994///
CY  - Oxford
PB  - Butterworth-Heinemann
KW  - Agricultural productivity
KW  - Programmed instruction
KW  - Crop yields
N1  - Published on behalf of open unversiteit  and Unversity of Greenwich (formerly Thames Polytechinc); Includes bibliographical references (p. 279-281) and index
ER  -