Parrish, P. Calcium superphosphate and compound fertilisers : their chemistry and manufacture / P. Parrish and A. Ogilvie. - 2nd ed. - London : Hutchinson's scientific & technical, 1939. - xi, 279 p. : ill. ; 25 cm. Includes index . 333 333 Subjects--Topical Terms: Fertilizers--Calcium phosphate. Dewey Class. No.: 631.8 / P249c