Lots of nice people have pointed out typos, created complex graphics, and recommended improvements. They include:
Bonita Dueck, MLIS, University of Calgary
Erik Geiger
Kathryn Roosa, faculty, Austin Community College (Austin, Texas)
Ervin Gonzalez
Jane M. Singh, Senior Product Marketing Manager, SEON
Robert Rodriguez
Ianthe Sarrazin, Freelance Technical Writer, Editor, and Geoscientist
James Ball
Kim Bravo
Rob Napier
GlobalSpec — Science & Lab Equipment
GlobalSpec — General Engineering
and many more . . .
