Kolay, A. K. Basic concepts of soil science / A. K. Kolay. - 2nd ed. - New Delhi: New Age International (P) Limited, Publishers, c2000. - xi,256p. : Figs.; 24 cm. Includes Index. english ISBN: 9788122411997 Subjects--Topical Terms: Soil science Civil Engineering Dewey Class. No.: 631.4/KOB