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1. Basic mathematics and computer techniques for coal preparation and mining

by Humphreys, Kenneth K; Leonard, Joseph W.

Edition: 1st. ed. Publisher: New York Marcel Dekker 1983Availability: Items available for loan: Central Library, BUET [622.332/HUM/1983] (1).

2. Basic-cost engineering

by Humphreys, Kenneth K; Katell, Sidney.

Edition: 1st ed.Publisher: New York Marcel Dekker 1981Availability: Items available for loan: Central Library, BUET [658.155/HUM/1981] (1).