Havlin,John Soil fertility and fertilizers : an introduction to nutrient management / John Havlin... [ et al.] - 8th ed. - New Delhi : Pearson Education, c2016. - vii, 520 p. : ill. ; 24 cm. Includes index. ISBN: 9789332570344 Subjects--Topical Terms: Soil fertility -- Management.Plant nutrients Dewey Class. No.: 631.8 / SOI