TY  - BOOK
AU  - Swaine,D.J.
TI  - The trace element content of soils
AV  - S592.6.T7 S93 
PY  - 1955///
CY  - England
PB  - Commonwealth Agricultural Bureaux
KW  - Soils
KW  - Trace element content
N1  - Includes bibliographical references
ER  -