Open Access Library Terms of Use

By accessing this material you agree to these terms of its use:

• Copyright of all non-attributed material on this site is retained by me, Jerry Mahun.
• You are granted permission to use any of this material (text and/or images) in support of surveying education.
• Material used shall be appropriately credited.

Because the material is freely provided and intended solely for educational purposes, there is no warranty as to its applicability or appropriateness of use. The author does not assume any liability for damages resulting from its use.

updated 10 Oct 2024