Relative Schwerkraftsbestimmungen mit Pendeln in Zentralasien. (Reports from the scientific expedition to the northwestern provinces of China under the leadership of Dr. Sven Hedin. The Sino-Swedish Expedition. Publication 30. II. Geodesy, 2)
Relative Schwerkraftsbestimmungen mit Pendeln in Zentralasien.
(Reports from the scientific expedition to the northwestern provinces of China under the leadership of Dr. Sven Hedin. The Sino-Swedish Expedition. Publication 30. II. Geodesy, 2)