Knighton, David. creator text London Baltimore, Md., U.S.A E. Arnold c1984 monographic 218 p. : ill. ; 24 cm. David Knighton. Includes index. Bibliography: p. [199]-214. Watersheds River channels Rivers GB1205 .K54 1984 551.48/3 0713164050 (pbk.) : 84071784 UOEL 000 20150824153338.0 1426622