Gaur A C Handbook of organic farming and biofertilizers - Jaipur Ambica Book Agency 2017 - xiv, 667p. ill. cm. ISBN: 8187118032 (hbk) Standard No.: 199031 Source: 1695, 07/02/2018, Prashant Book Agency Textual Subjects--Topical Terms: Animal residues Organic agricultureBotany Dewey Class. No.: J:24g, Q7 Carb