Coverage check
（1964 United States census of agriculture, v. 3 . [Special reports] ; pt. 7 . Evaluation surveys ; ch. 1）
[U.S. G.P.O.], [1969]
***記述は遡及データによる
U.S. Dept. of Commerce, Bureau of the Census : For sale by the Supt. of Docs., U.S. G.P.O. 1967-
