Terrain Evaluation : an introductory handbook to the history, principles, and methods of practical terrain assessment / Colin W. Mitchell. -- 2-nd ed. -- New York : Longman Scientific and Technical, 1991. -- 441 s. : ilustr., tab. ; 24 cm. -- ISBN 0-582-30122-X (brož.). zemský povrch * digitálne modely terénu * príručky