An essay on calcareous manures / by Edmund Ruffin ; edited by J. Carlyle Sitterson.

Cambridge, Mass. : Belknap Press of Harvard University Press, [1961], ©1961.

xxxv, 199 pages ; 22 cm.

Includes bibliographical references.

Electronic text and image data. Ann Arbor, Mich. : University of Michigan, Michigan Publishing, 2009. Includes both TIFF files and keyword searchable text. ([ACLS Humanities E-Book]) Mode of access: Intranet.