Sanyal Phani Bhusan Method for the accurate determination of carbonic acid present as carbonate in soils Sanyal Phani Bhusan - Calcutta superintendent government printing India 1923 - 8p. cm. - Bulletin,Agricultural reserch institute,Pusa; No. 151 . Standard No.: 25533 Source: Textual Subjects--Topical Terms: AGRICULTURE Dewey Class. No.: J:1:(E140), F3