TY  - BOOK
AU  - Knowles,Frank
AU  - Watkins,Job Elphin
TI  - A practical course in agricultural chemistry: for senior students of agriculture, dairying, horticulture and poultry husbandry 
U1  - 630.24 22
PY  - 1947///
CY  - London
PB  - Macmillan
KW  - Agricultural chemistry
N1  - Includes index
ER  -