TY  - BOOK
AU  - Brown, J. R.
TI  - Soil Testing : sampling, correlation, calibration and interpretation / 
SN  - 0891187847
U1  - 631.422 
PY  - 1987///
CY  - .- U. S. A.
PB  - : Soil Science Society of America
KW  - Technology (Applied Sciences)
KW  - Agriculture and Related Technology
KW  - Soil Testing
ER  -