TY  - BOOK
AU  - Lal,Rattan
TI  - Soil Quality and Agriculural Sustainability / 
SN  - 1575040824
U1  - 631.422 
PY  - 1998///.
CY  - Michigan : 
PB  - Ann Arbor Press, 
KW  - Soils Quality.
KW  - Soil Management.
KW  - Sustainable Agriculture.
ER  -