TY  - BOOK
AU  - Brown, James Richard.
TI  - Soil testing: : sampling, correlation, calibration and interpretation: proceedings of a symposium ... 1985
T2  - SSSA Special publication
U1  - 631.42 
PY  - 1987///
CY  - Madison, Wis.
PB  - Soil Science Society of America
KW  - Muestreo de suelos
KW  - Suelos
KW  - Análisis
KW  - Fertilidad
ER  -