Dr. Gregg Wilkerson
levan Center and Bakersfield college: greggwilkerson@bakersfieldcollege.edu
California State University, Bakersfield: gwilkerson1@csub.edu
Wilkerson Geological Services: yosoygeologo@gmail.com
GBW MINERALS
yosoygeologo@gmail.com
California State University, Bakersfield: gwilkerson1@csub.edu
Wilkerson Geological Services: yosoygeologo@gmail.com
GBW MINERALS
yosoygeologo@gmail.com