The Professional geologist.
American Institute of Professional Geologists.
[Golden, Colo.] : American Institute of Professional Geologists,
1979-
Title from caption.
"Official publication of the American Institute of Professional Geologists."
Vol. 52, no. 1 (Jan./Feb./Mar. 2015) issue is numbered as vol. 55, no. 1 on cover.
Latest issue consulted: Vol. 52, no. 1 (Jan./Feb./Mar. 2015).
Geology
Geology.