Astrophysics and twentieth-century astronomy to 1950 part A edited by Owen Gingerich - Cambridge Cambridge University Press 1984 - x, 198+viii+vip. ill. 24cm - General history of Astronomy v.4 . Includes index ISBN: 0521242568 Subjects--Topical Terms: Astrophysics Dewey Class. No.: 523.01 / AST