Nelson, John. Information exchange networking for agricultural development : a review of concepts and practices / John Nelson and John Farrington. - [Ede, Wageningen] : CTA, c1994. - viii, 86 p. : ill. ; 28 cm. Includes bibliographical references ISBN: 9290811137 LCCN: 96110266 Subjects--Topical Terms: Agricultural information networks. LC Class. No.: S494.5.I47 / N33 1994