Worthen, Edmund Louis, 1882- Farm soils, their management and fertilization. - 4th ed. - New York, J. Wiley, 1948. - xiii, 510 p. illus., maps. 21 cm. - The Wiley farm series . LCCN: agr48000271 Subjects--Topical Terms: Soils.Fertilizers. LC Class. No.: S591 / .W88 1948 Dewey Class. No.: 631.4 National Agricultural Library Call No.: 56.7 / W39 Ed.4