Distribution of the magnetic declination in the United States for January 1, 1915 with isogonic chart and secular change tables:
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Bibliographic Details
Main Author: Hazard, Daniel Lyman (Author)
Format: Book
Language:English
Published: Washington Government Printing Office 1920
Edition:2. ed.
Series:Special publication 33
Subjects:
Physical Description:16 S.

There is no print copy available.

Interlibrary loan Place Request Caution: Not in THWS collection!