Preliminary investigation into the motion of the pole of the earth in 1907
By: by H.J. Zwiers
Published: 1911
Language: eng
Number of pages: 11
Subjects: Magnetic pole; Rotational motion
Notes: At head of title: Koninklijke Akademie van Wetenschappen te Amsterdam.

"Reprinted from: Proceedings of the Meeting of Saturday, June 24, 1911".

"August 28, 1911."

Cover title.