Special publication (U.S. Dept. of Commerce, Coast and Geodetic Survey)

＜図書＞
Special publication (U.S. Dept. of Commerce, Coast and Geodetic Survey)


1	no. 77 Precise leveling in Texas / by H.G. Avers Washington : U.S. Govt. print. off. , 1922
2	no. 201 Earthquake investigations in California, 1934-1935 Washington : U.S. Govt. print. off. , 1936