TY  - BOOK
AU  - Barker, Allen V
AU  - Pilbeam, David J
TI  - Handbook of plant nutrition
SN  - 9781439881972
U1  - 631.4 
PY  - 2015///
CY  - Boca Raton
PB  - CRC Press
KW  - Essential elements macro nutrients
KW  - Nitrogen
KW  - phospherous
KW  - potassium
KW  - calcium
KW  - sodium
KW  - sulphar
ER  -