TY  - BOOK
AU  - Niskanen, Raina.
AU  - Jaakkola, Antti.
TI  - Estimation of cation-exchange capacity in routine soil testing
KW  - Intercambio catiónico
KW  - Suelos
KW  - Análisis
N1  - Sobretiro de : Journal of Agricultural Science in Finland, 58 : 1-7, 1986
ER  -