Add to ORKGAt head of title: State of Illinois ... Department of registration and education. Division of the State geological survey.Mimeographed
At head of title: State of Illinois. Department of Registration and Education. Division of State Geo...
At head of title: State of Illinois ... Department of registration and education ... Division of the...
At head of title: State of Illinois ... Dept. of registration and education ... Division of the Stat...
Mimeographed.At head of title: State of Illinois ... Department of registration and education. Divis...
At head of title: State of Illinois ... Department of Registration and Education. Geological Survey ...
Cover title.At head of title: State of Illinois. Department of Registration and Education. Division ...
At head of title: State of Illinois, Dwight H. Green, Governor. Department of Registration and Educa...
At head of title: State of Illinois. Dept. of registration and education. Division of State geologic...
"Printed by authority of the State of Illinois."At head of title: State of Illinois. Department of R...
At head of title: State of Illinois ... Dept. of registration and education ... Division of the Stat...
At head of title: State of Illinois. Department of Registration and Education. Division of the State...
At head of title: State of Illinois. Department of Registration and Education. Division of the State...
At head of title: State of Illinois. Dept. of Registration and Education. Division of the State Geol...
At head of title: State of Illinois Dept. of Registration and Education.Bibliography: p. 27
At head of title: State of Illinois, Department of Registration and Education.Cover title.Mode of ac...
At head of title: State of Illinois. Department of Registration and Education. Division of State Geo...
At head of title: State of Illinois ... Department of registration and education ... Division of the...
At head of title: State of Illinois ... Dept. of registration and education ... Division of the Stat...
Mimeographed.At head of title: State of Illinois ... Department of registration and education. Divis...
At head of title: State of Illinois ... Department of Registration and Education. Geological Survey ...
Cover title.At head of title: State of Illinois. Department of Registration and Education. Division ...
At head of title: State of Illinois, Dwight H. Green, Governor. Department of Registration and Educa...
At head of title: State of Illinois. Dept. of registration and education. Division of State geologic...
"Printed by authority of the State of Illinois."At head of title: State of Illinois. Department of R...
At head of title: State of Illinois ... Dept. of registration and education ... Division of the Stat...
At head of title: State of Illinois. Department of Registration and Education. Division of the State...
At head of title: State of Illinois. Department of Registration and Education. Division of the State...
At head of title: State of Illinois. Dept. of Registration and Education. Division of the State Geol...
At head of title: State of Illinois Dept. of Registration and Education.Bibliography: p. 27
At head of title: State of Illinois, Department of Registration and Education.Cover title.Mode of ac...
At head of title: State of Illinois. Department of Registration and Education. Division of State Geo...
At head of title: State of Illinois ... Department of registration and education ... Division of the...
At head of title: State of Illinois ... Dept. of registration and education ... Division of the Stat...