Vol. s5-32, Issue 189, 1936September 01, 1936 EDT
Upper and Lower Boundary of the Middle Carboniferous Moscovian Stage
Upper and Lower Boundary of the Middle Carboniferous Moscovian Stage
S. V. Semikhatova,
Semikhatova, S. V. (1936). Upper and lower boundary of the middle Carboniferous Moscovian stage. American Journal of Science, s5-32(189), 222–233. https://doi.org/10.2475/ajs.s5-32.189.222