Author Description
On this edition the magnetic variation curves have been updated with 2020 data. Under new royalty terms, the DGA (Danish Geodata Agency) have made it unviable to reproduce their copyrighted data. All DGA data has been removed from this chart. There has been general updating throughout.
Page Count:
1
Publication Date:
2021-01-26
ISBN-10:
1786792508
ISBN-13:
9781786792501
Community Tags
Reader Comments
Share Your Thoughts
No comments yet. Be the first to share your thoughts!