Watchers of the skies : an informal history of astronomy from Babylon to the space age /
Ley, Willy, 1906-1969.
Watchers of the skies : an informal history of astronomy from Babylon to the space age / Willy Ley - New York : Viking Press , c1963 - xiii, 528 p. : illus., ports. ; 24 cm.
Bibliography: p. 518-520. Bibliographical footnotes and index.
Astronomy--History.
523.09 / LEW 1963
Watchers of the skies : an informal history of astronomy from Babylon to the space age / Willy Ley - New York : Viking Press , c1963 - xiii, 528 p. : illus., ports. ; 24 cm.
Bibliography: p. 518-520. Bibliographical footnotes and index.
Astronomy--History.
523.09 / LEW 1963