TY  - BOOK
AU  - Vince-Prue, Daphne
TI  - Phtoperiodism in plants
SN  - 07 084048 2
U1  - 581.19153 V 767 P 
PY  - 1975///
CY  - New York
PB  - Mcgraw-hill book
KW  - Plants
KW  - Effects of day lenth on
ER  -