TY  - BOOK
AU  - Singh, Dwarika
TI  - Studies on Ammonium Fixation in the Soil Associations of White Sugar Belt of North Bihar
U1  - 631.41 
PY  - 1979///
CY  - Pusa, Samastipur
PB  - RAU
KW  - Soil Science
KW  - Thesis
ER  -