Astronomical observations
Astronomical observations astronomy and the study of deep space
edited by Erik Gregersen.
- New York Britannica Educational Publishing;Rosen Educational services 2010.
- 214 p. ill. 23 cm.
- An explorer's guide to the universe .
"In association with Britannica Educational Publishing and Rosen educational Services"
Includes bibliographical references and index.
9781615300259
Astronomy--Popular works.
Astronomy instruments--Popular works
Astronomy--Observations--Popular works.
"In association with Britannica Educational Publishing and Rosen educational Services"
Includes bibliographical references and index.
9781615300259
Astronomy--Popular works.
Astronomy instruments--Popular works
Astronomy--Observations--Popular works.