P-ISSN 0002-9599
E-ISSN 1945-452X
Vol. s4-49, Issue 291, 1920March 01, 1920 EDT
The Devonian Formations of Illinois
The Devonian Formations of Illinois
Thomas Edmund Savage,
Savage, T. E. (1920). The Devonian Formations of Illinois. American Journal of Science, s4-49(291), 169–182. https://doi.org/10.2475/ajs.s4-49.291.169