Isogonic chart for 1945, United States : including isoporic lines

Author:

U.S. Coast and Geodetic Survey

Publisher:

The Survey

Subject:

Geomagnetism

Spatial Coverage:

United States

Language:

English

Year:

1946

Date Issued:

2013-01-18T20:43:07Z

Date Modified:

2015-10-21T15:09:11Z

Library Catalog Record:

https://search.library.yale.edu/catalog/11198937

Digital Collections Record:

No Digital Collections record