Design and use of respirators : proceedings, Porton, 5-6 July, 1961 / edited by C.N. Davies
Design and use of respirators : proceedings, Porton, 5-6 July, 1961 / edited by C.N. Davies - - Oxford Pergamon Press, 1962 - xii,181 p. 23 cm - .
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Respirators-Congresses
614.894 Des:61