Sankaran, Dr. S. Principles of agronomy / Dr. S. sankaran and V. T. Subiah mudallar. - 5th ed. - India : Bangalore, 1993 - 466 p. : ill. figs. ; 21 cm. Includes bibliographical references and index. Subjects--Topical Terms: AgronomyIrrigationSoil Dewey Class. No.: 630 / SAP