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A discourse on some of the principal desiderata in natural history: and on the best means of promoting the study of science, in the United-States ; read before the Philadelphia Linnean Society, on the tenth of June, 1807
A discourse on some of the principal desiderata in natural history: and on the best means of promoting the study of science, in the United-States ; read before the Philadelphia Linnean Society, on the tenth of June, 1807