Weathered zones of the drift-sheets of Illinois
By: by M.M. Leighton and Paul MacClintock ...
Contributors: MacClintock, Paul, 1891- joint author
Series: Illinois. State geological survey. Report of investigations -- no. 20
Publisher: Printed by authority of the State of Illinois
Published: 1930
Place of publication: Urbana
Language: eng
Number of pages: 53
Subjects: Soils; Drift
Notes: At head of title: State of Illinois. Department of registration and education.

Reprinted from the Journal of geology, vol. xxxviii, no. 1, Jan.-Feb 1930, p. 28-53.