From nebula to nebula : or, The dynamics of the heavens, containing a broad outline of the history of astronomy, a general summary of its achievements, a synopsis and criticism of recent cosmological theories, and especially an expansion of the principle of universal gravitation to the solution of cosmic problems heretofore deemed insoluble / by George Henry Lepper.

363 p. ;, 24 cm.

Q173 .L5 1917

Gravity., Cosmology.

Pittsburgh :: Priv. print. [Pittsburgh printing Co.], 1917.

Book