Nichols, Herbert L., author
Moving the earth: the workbook of excavation
McGraw-Hill, 2010
 Buku Teks
Nichols, Herbert L., author
Moving the earth : The workbook of excavation
McGraw-Hill , 1976
 Buku Referensi
Herbert L. Nichols
Moving the earth the workbook of exavation/Herbert L. Nicholls, david A. Day
McGraw-Hill, 1998
 Buku Teks
Turner, Joe M., author
Excavation systems: planning, design, and safety
McGraw-Hill, 2009
 Buku Teks
Church, Horace K., author
Excavation handbook
McGraw-Hill, 1981
 Buku Referensi
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