Astronomy
Duncan, John Charles
Astronomy a text book by John Charles Duncan ... - 2d ed. rev. - New York London Harper & brothers [c1930] - xix p., 1 l., 435 p. front., illus., 65 pl. (1 col.) on 33 l., diagrs., charts. 22 cm.
30022137 //r87
Astronomy
QB45 / .D8 1930
Astronomy a text book by John Charles Duncan ... - 2d ed. rev. - New York London Harper & brothers [c1930] - xix p., 1 l., 435 p. front., illus., 65 pl. (1 col.) on 33 l., diagrs., charts. 22 cm.
30022137 //r87
Astronomy
QB45 / .D8 1930