Provisional result of the work of the international latitude service in the north parallel + 39°8′ during the year 1931 Hisashi Kimuka I. Notices scientifiques Pages: 3 - 10
Modernization of old von sterneck pendulum-apparatus for relative gravity determinations K. Wold I. Notices scientifiques Pages: 11 - 17
Description of the converted von sterneck pendulum-apparatus G. Jelstrup I. Notices scientifiques Pages: 18 - 25