Harris, F. (1994). Modern construction and ground engineering equipment and methods (2nd ed.). England: Longman.
Παραπομπή Chicago StyleHarris, Frank. Modern Construction and Ground Engineering Equipment and Methods. 2nd ed. England: Longman, 1994.
Παραπομπή MLAHarris, Frank. Modern Construction and Ground Engineering Equipment and Methods. 2nd ed. England: Longman, 1994.
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