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    Author: BOT (Jan)

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    BOT (Jan).. B-drae tot die verkiaring van die werldng van die insektisides D.DT., hexachloor silclohexaan, ohiordane en toxaphene, etc. [With a bibliography and a summary in English. Dootoral dissertation submitted to the University’of Leyen.] pp. (io) + 135. Illustrations, diagrams and tables. SO Leyde 1949.

    Card ID: 328