Vol. s5-19, Issue 109, 1930January 01, 1930 EDT
Probable Illinoian Till Beneath Wisconsin Gravel in the Delaware Valley
Probable Illinoian Till Beneath Wisconsin Gravel in the Delaware Valley
Frank Leverett,
Leverett, F. (1930). Probable Illinoian till beneath Wisconsin gravel in the Delaware valley. American Journal of Science, s5-19(109), 71. https://doi.org/10.2475/ajs.s5-19.109.71