Letters, to the Philadelphia Society for Promoting Agriculture, 1787-1788
Name:
Wynkoop, Henry; Powel, Samuel, 1738-1793
Date:
1787
Description:
Letter on the use of plaster of Paris as a grass manure is dated 13 August 1787. Letter on the Hessian fly is addressed to Samuel Powel and dated 16 August 1788.
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