TY  - BOOK
AU  - Robinson, J. B. D. ,
TI  - Soil Nitrogen Indey and its Calibration with Crop Perfoormance to Improve Fertilizer Efficiency on Arable Soils
SN  - 0851983405
U1  - 631.84 
PY  - 1975///
CY  - Wallingford
PB  - CABI Publishing
KW  - Soil Nitrogen I
ER  -