Nichols, Herbert L. Moving the earth : the workbook of excavation / Herbert L. Nichols, Jr., David A. Day. - 4th ed. - New York : McGraw-Hill, c1999. - 1 v. (various pagings) : ill. ; 25 cm. Includes index. ISBN: 0070464847 Subjects--Topical Terms: Earthmoving machinery.Earthwork.NUST Dewey Class. No.: 624.152 / NIC