TY  - BOOK
AU  - Chung-Ho, Chu.
TI  - Relation ship between exchangeable and total magnesium in Pensylvania soils
KW  - Intercambio catiónico
KW  - Suelos
KW  - Magnesio en
N1  - Sobretiro de: Clays and Clay Minerals 33(4): 340-344. 1985
ER  -