A system of natural history, adapted for the instruction of youth, in the form of a dialogue / Originally written in German, by Prof. Raff of Goettingen; now first translated into English [Ed. by R.H].

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A system of natural history, adapted for the instruction of youth, in the form of a dialogue / Originally written in German, by Prof. Raff of Goettingen; now first translated into English [Ed. by R.H]. Public Domain Mark. Source: Wellcome Collection.