TY  - BOOK
TI  - Methods of soil analysis. part 2. chemical and microbiological properties
SN  - 0-89118-072-7
U1  - 631.41 
PY  - 1982///
CY  - Madison
PB  - American Society of Agronomy and Soil Science Society of America
KW  - SUELOS
KW  - ANALISIS
ER  -