TY  - BOOK
AU  - Kelley, Walter P.
TI  - Cation exchange in soils
U1  - 540.0202 
PY  - 1948///
CY  - New York
PB  - Reinhold Publishing Corporation
KW  - Soil fertility
KW  - Agricultural chemistry
KW  - Soil nutrients
N1  - Includes bibliographical references and index
ER  -