SCIENTIFIC PUBLICATIONS. 86 



PULLEN, W. W. F. Application of Graphic Methods 



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PULSIFER, W. H. Notes for a History of Lead. 8vo, 

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PYNCHON, Prof. T. R. Introduction to Chemical 



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RADFORD, Lieut. CYRUS. S. Handbook on Naval 



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RAFTER, GEO. W. Treatment of Septic Sewage 



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Tables for Sewerage and Hydraulic Engineers. 



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RAFTER, GEO. W. and M. N. BAKER. Sewage Dis- 



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RAM, GILBERT S. The Incandescent Lamp and its 

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RANDALL, J. E. A Practical Treatise on the Incan- 

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RANDALL, P. M. Quartz Operator's Hand-book. 

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RANDAU, PAUL. Enamels and Enamelling; an 



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