TY  - GEN
AU  - Pieris , boniface
AU  - Samaranayake , Chandra
AU  - Hirimburegama , K. 
TI  - Plant physiology: BTU 2201 level 4
U1  - 571.2 
CY  - Colombo
PB  - Open university of Sri Lanka
KW  - PHYSIOLOGY
KW  - MINERAL NUTRITION OF PLANT
KW  - FUNCTION OF ESSENTIAL ELEMENTS
ER  -