A Source book in astronomy and astrophysics, 1900-1975 / Ed. by Kenneth R. Lang, Owen Gingerich. - Cambridge, Mass. : Harvard University Press, 1979. - xx, 922 p. : ill. ; 29 cm. - Source books in the history of the sciences .

Includes bibliogr. references and indexes.

0674822005


Astronomy--Addresses, essays, lectures.
Astrophysics--Addresses, essays, lectures.