Mitchell, Colin W. Terrain evaluation : an introductory handbook to the history, principles and methods of practical terrain assesment - London : Longman, 1973 - 221 p. : ilus - The World"s landscape . - The World"s landscape . LCCN: 38467 Subjects--Topical Terms: Tierras--Evaluación. Dewey Class. No.: 551.4 / M5