Ruffin, Edmund, 1794-1865.
An essay on calcareous manures / by Edmund Ruffin and edited by J. Carlye Sitterson. - 3d ed. - Cambridge : Belknap Press of Harvard University Press, c1961. - vii, [13]-316 p. : ill. ; 24 cm. - John Harvard library .
12016276
Marl.
S643 / .R92 1842
631.807 / RUE
An essay on calcareous manures / by Edmund Ruffin and edited by J. Carlye Sitterson. - 3d ed. - Cambridge : Belknap Press of Harvard University Press, c1961. - vii, [13]-316 p. : ill. ; 24 cm. - John Harvard library .
12016276
Marl.
S643 / .R92 1842
631.807 / RUE