01388cam a22003491 4500 gs 52000236 DLC 20260227111359.0 770315s1952 miua s000 0 eng c gs 52000236 (OCoLC)2805580 U.S. Geol. Survey Libr. MiRochOU DLC n-us-mi QE125 .A4 no. 39 QE662 .H78 551.72 551.731 Hussey, Russell C. (Russell Claudius), 1888- The Middle and Upper Ordovician rocks of Michigan. Lansing, 1952. 89 p. illus. 23 cm. Michigan. Dept. of Conservation. Geological Survey Division. Publication 46. Geological series, 39 "A completion of a report written by Professor Hussey and published as a part of Geological Survey Publication 40, Geological series, 34." "Published as a part of the Biennial report of the Geological Survey Division in 1952." Bibliography: p. 67. Geology, Stratigraphic Ordovician. Geology Michigan. Paleontology Michigan. Paleontology Ordovician. Petrology Michigan. Michigan. Geological Survey Division. Publication ; 46. Michigan. Geological Survey Division. Geological series ; 39. 28670 28670