Note 648 — Chapter XX · SHORT-PERIOD VARIABLES—Continued.
Reading edition
Astr. Journ. No. 477; Astroph. Journ. vol. xiii. p. 177; Nature, 12th September 1901.
Reading edition
Astr. Journ. No. 477; Astroph. Journ. vol. xiii. p. 177; Nature, 12th September 1901.