Nichols, Herbert L Moving the earth : the workbook of excavation / Herbert L. Nichols, Jr., David A. Day. - 5th ed. - New York : McGraw-Hill, c2005. - xix, various pagings, ill. ; 25 cm. Includes index. ISBN: 007143058X (Hb.) Subjects--Topical Terms: Earthwork.Earthmoving machinery.Excavation. LC Class. No.: TA715 / .N52 2005