TY  - BOOK
AU  - Knowles,Frank
AU  - Watkin, Job Elphin
TI  - A practical course in agricultural chemistry, for senior students of agriculture, dairy, horticulture and poutry husbandry/ Frank Knowles a nd J. Elphin Watkin, with a foreword by Sir John Russell
U1  - 630.24 
PY  - 1947///
CY  - London
PB  - Macmillan
KW  - Agricultural chemistry
ER  -