Knapp, Brian J. Elements of geographical hydrology / Brian J. Knapp. - London ; Boston : Allen & Unwin, 1979. - 85 p. : ill. ; 25 cm. Includes index. Bibliography: p. [82] ISBN: 004551030X : Đ2.25 LCCN: 78040373 Nat. Bib. No.: GB*** Subjects--Topical Terms: Hydrology. LC Class. No.: GB661.2 / .K55 Dewey Class. No.: 551.48 / K67