RIES Building Stones and Clay Products 8vo.*|3 00 



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and LEIGHTON History of the Clay-working Industry of the United 



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ROWE Practical Mineralogy Simplified 12mo, M 25 



TILLMAN Text-book of Important Minerals and Rocks .... . . . . . . . . . 8vo,' *2 00 



WASHINGTON Manual of the Chemical Analysis of Rocks 8vo, 2 00 



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CRANE Gold and Silver 8vo, *5 00 



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EISSLER Modern High Explosives 8vo, 4 00 



GILBERT, WIGHTMAN and SAUNDERS Subways and Tunnels of New York. 



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PEELE Compressed Air Plant 8vo, *3 50 



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GERHARD Guide to Sanitary Inspections 12mo, 1 50 



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GERHARD The Water Supply, Sewerage, and Plumbing of Modern City 



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PARSONS Disposal of Municipal Refuse 8vo, 2 00 



21 



