Hooper, A. The river mathematics. - New York H. Holt and company [1945] - 4 p.l., 401 p. illus. (incl. maps) fold. pl., diagrs. (1 fold.) 22 cm. At head of title: A. Hooper, M.A. "First printing." LCCN: 45035197 //r87 Subjects--Topical Terms: Mathematics LC Class. No.: QA39 / .H67 Dewey Class. No.: 510