TY  - BOOK
AU  - Comber, Norman M. 
AU  - Trefor , H.
AU  - Willcox , J.S. 
TI  - An introduction to agricultural chemistry
U1  - 531.41 21st ed
PY  - 1948///
CY  - London
PB  - Edward Arnold
KW  - Agricultural chemistry
KW  - Soil chemistry
N1  - Index: pp 307-15
ER  -