WIRSHING, James R. Schaum's outline of theory and problems of introductory surveying / James R Wirshing, Roy H Wirshing - New York : McGraw Hill, c1985. - 360p. : ill. ; 28 cm. - Schaum's outline series . ISBN: 0070711240 Subjects--Topical Terms: Surveying. Dewey Class. No.: 526.9 / WIR