Observations on the geology of the United States of America; with some remarks on the effect produced on the nature and fertility of soils, by the decomposition of the different classes of rocks. And an application to the fertility of every state in the Union, in reference to the accompanying geological map ... / By William Maclure.
- Maclure, William, 1763-1840.
- Date:
- 1817
Licence: Public Domain Mark
Credit: Observations on the geology of the United States of America; with some remarks on the effect produced on the nature and fertility of soils, by the decomposition of the different classes of rocks. And an application to the fertility of every state in the Union, in reference to the accompanying geological map ... / By William Maclure. Source: Wellcome Collection.
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