00939cam a22002531 4500 gs 37000117 DLC 20260227111341.0 820115s1936 miu 000 0 eng c gs 37000117 (OCoLC)8067587 U. S. Geol. Survey. Libr. GStG OCoLC DLC premarc TN24.M5 A34 no. 1 Eddy, Gerald E. (Gerald Ernest), 1907- Geology of the Crystal oil field, Montcalm County, Michigan, by G. E. Eddy. [Lansing?] 1936. cover-title, 8 numb. l., fold. map, fold. profile. 27 cm. Michigan. Dept. of Conservation. Geological Survey Division. Progress report, no. 1 Photoprinted. Geology Michigan Montcalm County. Petroleum Michigan Montcalm County. Michigan. Geological Survey Division. Progress report ; no. 1. 27348 27348