References
AIKMAN, J. M.--A Basin Method of Nut Tree Culture. Proc. Iowa. Acad.
Sci. 50:241-246. 1943
NEEL, L. R.--The Effect of Shade on Pasture. Tenn. Exp. Sta. Cir. 65,
1939
SMITH, R. M.--Some Effects of Black Locusts and Black Walnuts on
Southeastern Ohio Pastures Soil Sci. 53:385-398, 1942
Northern Nut Growers Association Report of the Proceedings at the Thirty-Seventh Annual Report Wooster, Ohio, September 3, 4, 5, 1946 · 第 264 / 315 题