Vol. 257, Issue 10, 1959December 01, 1959 EDT
Stratigraphic Units in Space and Time
Stratigraphic Units in Space and Time
Harry Eugene Wheeler,
Wheeler, H. E. (1959). Stratigraphic units in space and time. American Journal of Science, 257(10), 692–706. https://doi.org/10.2475/ajs.257.10.692