[043-20]The Mt. Simon Sandstone in Northern Illinois
Templeton, J.S. The Mt. Simon Sandstone in Northern Illinois 043-20-print
[043-19]Current Evaluation of the Cambrian-Keweenawan Boundary
Raasch, Gilbert O. Current Evaluation of the Cambrian-Keweenawan Boundary 043-19-print
[043-18]Glacial Lake Merrimac
Bretz, J. Harlen Glacial Lake Merrimac 043-18-print
[043-17]Atomic Models of the Silicates as an Essential Aid in the Teaching of Elementary Mineralogy
Henderson, Donald M. Atomic Models of the Silicates as an Essential Aid in the Teaching of Elementary Mineralogy 043-17-print
[043-16]Some Easily Constructed Models for Teaching Optical Mineralogy
Champan, Carleton A. Some Easily Constructed Models for Teaching Optical Mineralogy 043-16-print
[043-15]Student Projects and Their Place in Geologic Education
Fryxell, Fritiof Student Projects and Their Place in Geologic Education 043-15-print
[043-14]Slope Studies of Northern Illinois
Calef, Wesley Slope Studies of Northern Illinois 043-14-print
[043-13]Water Resource Conservation in Illinois
Hudson, H.E. Water Resource Conservation in Illinois 043-13-print
[043-12]Geographical Possibilities of Cork Production in the United States
Yahr, Charles C. Geographical Possibilities of Cork Production in the United States 043-12-print
[043-11]A Spherical Arrangement of the Chemical Elements
Green, Frank O. and Jackson, Bernard G. A Spherical Arrangement of the Chemical Elements 043-11-print