TY  - BOOK
AU  - Karwasra, S.P. Singh
TI  - Vertical distribution of forms of sulphur in erstwhile Punjab soils and mineralization of its organic fraction
U1  - T 631.41 K13V 
PY  - 1968///
CY  - Ludhiana
PB  - PAU
KW  - SOILS - SULPHUR CONTENT
ER  -