TY  - BOOK
AU  - Comber,Norman Mederson
TI  - An introduction to agricultural chemistry / 
U1  - 630.24 
PY  - 1948///
CY  - London: 
PB  - E. Arnold, 
KW  - Agricultural chemistry
N1  -  Pt. 1 is an abridgement and modification of Comber's An introduction to the scientific study of the soil
ER  -