On the improvement of poor soils : read in the Holderness Agricultural Society, June 6, 1796, in answer to the following question; "What is the best method of cultivating and improving poor soils, where lime and manure cannot be had?"

Mode of access: Internet.

Essays on the natural history and origin of peat moss: the peculiar qualities of that substance; the means of improving it as a soil; the methods of converting it into a manure; and the other economical purposes to which it may be made subservient.

Pritzel 7544 (1810 edition)

New method, which teaches how to make vegetable manure, by a course of high fermentation, in fifteen days, without cattle, as good and more durable than farm manure: to appropriate it to the nature of soils and families of plants, and with great economy: it further shows how to prepare vegetable and mineral composts, and contains various processes.

Microfilm. Ann Arbor, Mich., Xerox University Microfilms, 1974. 1 reel. 35 mm. (American Culture Series, reel 617.3)

Agricultural enquiries on plaister of Paris : Also, facts, observations and conjectures on that subtance [sic], when applied as manure. : Collected, chiefly from the practice of farmers in Pennsylvania, and published as much with a view to invite, as to give information. /

Errata statements, p. [112] and [114].

The cow tester's manual /

Also issued in mimeographed form in 1936, 1937 and 1940, as U.S. Bureau of dairy industry, BDIM-699.

Variations in the composition and properties of milk from the individual cow /

"January 17, 1913."

Cow Crossing Bridge

Saline Valley Farms was an experiment in cooperative farming and living begun in 1932 by Harold S. Gray.

Organizing cow-testi

Mode of access: Internet.

Wisconsin dairy cow

Mode of access: Internet.

Periodicity of the blue-green algae and their effect on the efficiency of manure-disposal lagoons /

"In cooperation with National Botanic Gardens Lucknow, India."