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TUMORS OF THE SKIN 179 generative epithelial proliferations, the xylol, used as the solvent, plays an important causative role.

214 CHAPTER 6 and Erich Schoniger--the most convincing early demonstration of the central role of smoking in the development of lung cancer.140 We do not know much about Schoniger, the younger of the two men, but we do know a bit about Schairer.

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Respectfully submitted.

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Air System Equipment atf/fJ*TM Hart & Cooley Manufacturing Co.

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HAZARD DETERMINATION FOR VISTA LPA SOLVENTS LPA Solvent is a hydrotreated, predominately napthenic hydrocarbon solvent.

Vista Chemical Company 15990 North Barker's Landing Road Post Office Box 1902?

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