A practical course in agricultural chemistry :
Knowles, Frank.
A practical course in agricultural chemistry : for senior students of agriculture, dairying, horticulture and poultry husbandry / by Frank Knowles and J. Elphin Watkin, with a foreword by Sir John Russell. - 2nd ed. - London : Macmillan , 1947. - xi, 216 p.: ill. ; 22 cm.
Includes index
Agricultural chemistry.
630.24 / KNP
A practical course in agricultural chemistry : for senior students of agriculture, dairying, horticulture and poultry husbandry / by Frank Knowles and J. Elphin Watkin, with a foreword by Sir John Russell. - 2nd ed. - London : Macmillan , 1947. - xi, 216 p.: ill. ; 22 cm.
Includes index
Agricultural chemistry.
630.24 / KNP