TY  - BOOK
AU  - Johnson,C.B.
TI  - Physiological processes limiting plant productivity
SN  - 0408106492
U1  - 581.1 
PY  - 1981///
CY  - London
PB  - Butterworths
KW  - Plant physiology
KW  - Plants, cultivated
KW  - Physiology
KW  - Primary productivity (Biology)
KW  - Crop yields
N1  - Includes bibliographies and index; Recommended text: *AG202
ER  -