Note 24 — 12 PUZZLES, PROBLEMS, AND HALF-ANSWERS
Reading edition
Erwin H. Barbour and C. Bertrand Schultz, “Paleontologic and Geologic Consideration of Early Man in Nebraska,” Bulletin, Nebraska State Museum, 1:431 (1936).
Reading edition
Erwin H. Barbour and C. Bertrand Schultz, “Paleontologic and Geologic Consideration of Early Man in Nebraska,” Bulletin, Nebraska State Museum, 1:431 (1936).