Black walnut culture; papers presented ... August 2 and 3, 1966. - Walnut Workshop, Carbondale, Ill., 1966.; North Central Forest Experiment Station (Saint Paul, Minn.); United States. Forest Service; American Walnut Manufacturers Association, Chicago; Southern Illinois University at Carbondale. Department of Forestry ([St. Paul, 1966)
Cover title.
At head of title: North Central Experiment Station, Forest Service, U.S. Dept. of Agriculture.
Keywords: Eastern black walnut -- Congresses