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2 ASHRAE Guide And Data Book THE GEORGE EVANS CORPORATION MOLINE, ILLINOIS Evans Lifelong Air and Grease Filters All Aluminum . . .

Industrial Hygiene Digest - Scp'.umUc r. 17 jc the development of experimental silicosis, both ir. respect of its amount and its distribution.

56 These shaft brakes vary greatly in de sign.

Industrial Hygiene Digest June, 1957 the clinical approach, U is apparent that studies of the environment in the interest of cancer, especially of the lung, are complicated by a host of variables which cannot always be deter, mined with certainty in the light of present knowledge.

48.

Other Volumes in this (1958) Series Users of fids volume w3I find much value m Hs companion volumes, which offer ttie complete record of tha 46ft National Safely Congress!