We’re talking about organizing and maps! Join us on Open Call on May 11 to kick-off this topic and then every Tuesday through June. Click here for call-in details!


@rmark

@rmark

Joined over 7 years ago

MS Physics, Ph.D. Geology, retired from US Geological Survey. Now, Chief Scientist, Rupestrian CyberServices (RCS) http://www.rupestrian.com RCS works to document and protect rock art.

See also http://www.rupestrian.com/robert-mark.html and http://www.rupestrian.com/publications.html