Singh, J. (1993). Heavy construction: : planning, equipment and methods. Rotterdam: A. A. Balkema.
Παραπομπή Chicago StyleSingh, Jagman. Heavy Construction: : Planning, Equipment and Methods. Rotterdam: A. A. Balkema, 1993.
Παραπομπή MLASingh, Jagman. Heavy Construction: : Planning, Equipment and Methods. Rotterdam: A. A. Balkema, 1993.
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