Puri Amar Nath New method of estimating total carbonates in soils Puri Amar Nath - calcutta Central Publication Branch 1930 - 7p. cm. - Imperial Institute of Agricultural Reserach, Pusa . Standard No.: 27124 Source: Textual Subjects--Topical Terms: AGRICULTURE Dewey Class. No.: J:1:6.2, G0