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compiled, edited with an introduction by Ruth Karen
Hutchinson 1986, c1985
Available at 2 libraries
compiled, edited, and with an introduction by Ruth Karen
W. Morrow c1985 1st ed
Available at 10 libraries
Simon Williams and Ruth Karen
Westview Press 1985 Westview special studies in agriculture science and policy
Available at 20 libraries
Ruth Karen
Four Winds Press c1975
Available at 1 libraries