Astronomy and the origin of the earth /
Mehlin, Theodore Grefe, 1906-
Astronomy and the origin of the earth / by Theodore G. Mehlin - 2nd ed. - Dubuque, Iowa : Wm. C. Brown Publishers, 1973 - vii, 136 p. : ill. ; 23 cm.
Includes bibliographical references and index.
0697050122
Astronomy--Popular works
Astronomy and the origin of the earth / by Theodore G. Mehlin - 2nd ed. - Dubuque, Iowa : Wm. C. Brown Publishers, 1973 - vii, 136 p. : ill. ; 23 cm.
Includes bibliographical references and index.
0697050122
Astronomy--Popular works
