On the local effects of crude paraffin / by Alex. Ogston.

Skin and respiratory sensitisers : reference chemicals data bank / European Centre for Ecotoxicology and Toxicology of Chemicals.

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On the local effects of crude paraffin / by Alex. Ogston.

Skin and respiratory sensitisers : reference chemicals data bank / European Centre for Ecotoxicology and Toxicology of Chemicals.