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		No cover image available Introductory mining engineering by Hartman, Howard L \| . Series: Edition: Language: English Publication details: ; New York : John Wiley, 1987 ; 1987Availability: Items available for loan: 2 Call number: 622 Har(3), ... Place hold Add to cart (remove)
		No cover image available Mine ventilation and air conditioning by Hartman, Howard L \| . Series: Edition: Language: English Publication details: New York ; Ronald Press, ; 1961Availability: Items available for loan: 1 Call number: 622.41 Har. Place hold Add to cart (remove)
		SME mining engineering handbook (R) by \| Hartman, Howard L \| Hartman, Howard L. Series: Edition: 2nd ed Language: English Publication details: Littleton ; SMME ; 1992Availability: Items available for loan: 2 Call number: 622(083)SME-2, ... Place hold Add to cart (remove)

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