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សៀវភៅអេឡិចត្រូនិក
Results of Magnetic Observations Made by the Coast and Geodetic Survey Between July 1, 1902, and June 30, 1903
ឥតគិតថ្លៃ
United States Magnetic Declination Tables and Isogonic Charts for 1902: And, Principal Facts Relating to the Earth's Magnetism
ឥតគិតថ្លៃ
Land Magnetic Observations, 1905-1910
ឥតគិតថ្លៃ
Report on the Survey of the Boundary-line Between Allegany and Garrett Counties [Maryland]: In Accordance with the Act Passed at the Session of the General Assembly of 1898 ...
ឥតគិតថ្លៃ
The Broader Aspects of Research in Terrestrial Magnetism
ឥតគិតថ្លៃ
Some of the Chief Problems in Terrestrial Magnetism and Electricity
ឥតគិតថ្លៃ
Beiträge zur Kenntniss des Wesens der Säcular-Variation des Erdmagnetismus
ឥតគិតថ្លៃ
United States Magnetic Declination Tables and Isogonic Charts for 1902: And, Principal Facts Relating to the Earth's Magnetism
ឥតគិតថ្លៃ
The Earth's Magnestism
ឥតគិតថ្លៃ
Land Magnetic Observations 1911-1913: And Reports on Special Researches
ឥតគិតថ្លៃ
United States Magnetic Tables and Magnetic Charts for 1905
ឥតគិតថ្លៃ
Land Magnetic Observations, 1914-1920
ឥតគិតថ្លៃ
Ocean Magnetic Observations, 1905-1916: And Reports on Special Researches, Issue 175, Volume 3
ឥតគិតថ្លៃ