AU  - Curtis,Otis F.
AU  - Clark,Daniel G.
TI  - Introduction to plant physiology / 
T2  - McGraw- Hill Publication Sciences 
U1  - 581.1 
PY  - 1950///
CY  - New York : 
PB  - McGraw-Hill Book Company Inc , 
KW  - Physiology-Plant
ER  -