Tolley, G. S.
Economics of watershed planning - 1st ed. - Ames Iowa State University Press 1961 - ix, 339 p. ill. 24 cm.
Includes bibliographies
Watersheds
627.52 / TOL/1961
Economics of watershed planning - 1st ed. - Ames Iowa State University Press 1961 - ix, 339 p. ill. 24 cm.
Includes bibliographies
Watersheds
627.52 / TOL/1961