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Insulation SXtinndd The Ric-wiL Company PREFABRICATED INSULATED PIPING SYSTEMS Union Commerce Bldg., Cleveland, Ohio Agents in Principal Cities Ric-wiL produces complete insulated piping systems designed and engineered to specific operating requirements for transmission (with the lowest possible thermal loss) of steam, hot or refrigerated liquids or gases.

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Controls and Instruments The Mercoid Corporation i Main Office and Factory, 4201 Belmont Atenue, Chicago 41, Illinois New York Office, 205 East 42nd St.

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Occupational and Environmental Medicine Papers 577 581 598 602 606 612 618 625 632 640 Correspondence 646 646 647 647 647 Lymphohaematopoieticmalignancy around all industrial complexes that include major oil refineries in Great Britain P Wilkinson,B Thakrar,P Walls,M Landon, S Falcom, C Gmndy, P Elliott Mortality among aircraft manufacturing workers ]ohn D Boice Jr, Donald E Marano, Jon P Fryzek, ChristopherJ Sadlet, JosephK McLuugblin Biological monitoringto assess exposure from use of isocyanates in motor vehicle repair N R William, K ]ones, J Cocker Asbestosis and small cell lung cancer in a clutch refabricator JeffreyL b i n , Michael F O'Sullivan, CarolynJ Corn, M G h William, Ronald F D d o n Chemical differencesbetween long and short amosite asbestos: differencesin oxidation state and coordination sites of iron, detected by infra red spectroscopy Andrew Graham,John Higin6otbam, Doug Alkan, Kenneth Donaldson, Paul H Be&& Non-neoplastic mortality of European workers who produce man made vitreous fibres D Sali, P Boffetta, A Andersen, J W Cberrie, J Cbang Claude, J Hatuen, J H Oken, A C Pmatori, N Pkato, L T w o , P Westerholm,P Wintq R Saraui Study of cancer incidence among 6363male workers in four Nomyfercomangancse and silicomvlganeseproducing plants nund H066esland, Helge Kjuus,Dag S Thelk Study of cancer incidence among 8530 male workers in eight Norwegian plants producing ferrosilicoa and silicon metal Anumi Hob6csland, Helge Kjuus,Dag S Thelk Decrements in cognitiveperformance in metal inert gas welders exposed to aluminium &a Akika, Brian T Stolkry, Vesa Riihimiiki Shift work, social class, and ischaemic heart disease in middle aged and elderly men; a 22 year follow up in the Copenhagen male study Henrik Beggdd, Poul Suudicuni, Hans Ok Hein, Finn Gyntelberg Basal cell carcinoma after frequent episodes of cutaneous erythema and peeling induced by welding A Michael Donoghue, Murray J Sinckair Work related respiratory symptoms in radiographers Julia Smedky, Paul Cullinan,Anthony Frew, Anthony Newman-Tqloc David Coggon Air pollution research in the United Kingdom R L Maynard Notice Book reviews . . -.