Note 26 — 12 PUZZLES, PROBLEMS, AND HALF-ANSWERS
Reading edition
Albrecht Penck, “Wann kamen die Indianer nach Nordamerika?” Proceedings, 23rd International Congress of Americanists (1930), 23-30.
Reading edition
Albrecht Penck, “Wann kamen die Indianer nach Nordamerika?” Proceedings, 23rd International Congress of Americanists (1930), 23-30.