Note 20 — 12 PUZZLES, PROBLEMS, AND HALF-ANSWERS
Reading edition
Spinden, “Time Scale for the New World.” Proceedings, 8th American Scientific Congress, 2:39 (1942), and World Chronology, etc., 2, 19.
Reading edition
Spinden, “Time Scale for the New World.” Proceedings, 8th American Scientific Congress, 2:39 (1942), and World Chronology, etc., 2, 19.