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[Chemical toxicological problems of environmental protection].
Coenen R, Fritsch W, Goetzmann S, Kesberger H, Langhein J, Piotrowski HD, Schladitz R. Coenen R, et al. Among authors: piotrowski hd. Naturwissenschaften. 1972 Mar;59(3):106-11. doi: 10.1007/BF00591783. Naturwissenschaften. 1972. PMID: 4111909 German. No abstract available.