TY  - BOOK
AU  - Sehgal, J
TI  - Introductory pedology: soil genesis, survey and classification
SN  - 812723169X
U1  - 631.4 
PY  - 2006///
CY  - Ludhiana
PB  - Kalyani publishers 
KW  - Concept and definitions
KW  - Earth:evolution and composition
KW  - Soil formation
KW  - Pedogenic processess
KW  - Soil classification
N1  - 1996
ER  -