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 Many Cosmic Problems Heretofore Deemed Insoluble
George Henry Lepper
Jan 1919 · Priv. print. [Pittsburgh printing Company]