*W.51
 
.P44A Peters, Richard, 1744-1828,
Agricultural enquiries on plaister of Paris, Also, Facts, observations and conjectures on that subtance [!] when applied as manure, Col- leeted, chiefly from the practice of farmers in Pennsylvania, Philadelphia, Printed by C, Cist and J, Markland, 1797.
111 p. 2icm,
Dedicated to George Washington,
Evans 32673.
1. Gypsum. 2. iculture--Pennsylvania. 3, Washington, & George, Pres. U. S.—
Dedication. of,,bo OS io’ of Wi adit Tech