TY  - GEN
AU  - Arora , D. K.
AU  - Guptha , Seema
TI  - Phisiological ecology
SN  - 8174882375
U1  - 581.7 
PY  - 1996///
CY  - New Delhi
PB  - Anmol 
KW  - THE HUMAN IMPACT ON THE SOIL
KW  - AERATION OF SOIL
KW  - THE SUB STRATUM
ER  -