Knowles, Frank.
A practical course in agricultural chemistry : for senior students of agriculture, dairying, horticulture and poultry husbandry / Frank Knowles and J. Elphin Watkin ; with a foreword by Sir John Russell. - 2nd ed. - London : Macmillan, 1950. - xi, 216 p. : illus. 22 cm.
Includes bibliographical references and index.
48019933
Agricultural chemistry.
S585 / .K6 1947
631.24 / KNP
A practical course in agricultural chemistry : for senior students of agriculture, dairying, horticulture and poultry husbandry / Frank Knowles and J. Elphin Watkin ; with a foreword by Sir John Russell. - 2nd ed. - London : Macmillan, 1950. - xi, 216 p. : illus. 22 cm.
Includes bibliographical references and index.
48019933
Agricultural chemistry.
S585 / .K6 1947
631.24 / KNP