Douglas, Ian. Humid landforms / Ian Douglas. - Canberra : Australian National University Press, 1977. - xvi, 288 p. : ill., maps. - An introduction to systematic geomorphology ; v. 1 . ISBN: 0708101593. 0708111939 Nat. Bib. No.: Aus Subjects--Topical Terms: Landforms--Tropics.Landforms.Erosion.Hydrology. LC Class. No.: GB446 / .D68 1977b Dewey Class. No.: 551.3/5/0913�19