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Letters to the Editor: PDF Only

Authors' Response

Cady, L D M.D.; Bischoff, D P M.P.H.; O'Connell, E R M.S.; Thomas, P C B.A.; Allan, J H M.D.

Journal of Occupational Medicine: November 1979 - Volume 21 - Issue 11 - p 720,725
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©1979 The American College of Occupational and Environmental Medicine