Note 173 — Chapter X · THE NATURE OF RADIANT ENERGY
Reading edition
D. L. Webster and H. Clark, Proc. Nat. Acad., III (1917), 18. Also Webster, ibid., VI (1920), 26 and 639.
Reading edition
D. L. Webster and H. Clark, Proc. Nat. Acad., III (1917), 18. Also Webster, ibid., VI (1920), 26 and 639.