Vol. s5-9, Issue 52, 1925April 01, 1925 EDT
Kansas Permian Insects; Part 4, the Order Paleodictyoptera
Kansas Permian Insects; Part 4, the Order Paleodictyoptera
Robin John Tillyard,
Tillyard, R. J. (1925). Kansas Permian Insects; Part 4, the Order Paleodictyoptera. American Journal of Science, s5-9(52), 328–335. https://doi.org/10.2475/ajs.s5-9.52.328