Clarke, G.R. The study of the soil in the field/ G.R. Clarke - 4th ed. - Oxford: Clarendon Press, 1957 - 204 p.: plates; 22 cm. Includes index ISBN: Rs. 66.00 Subjects--Topical Terms: Soils--TestingSoils--ClassificationSoils--MapsSoil mapping Dewey Class. No.: 631.4