1
by Hecht, Friedrich
Published 1960
Springer Berlin Heidelberg
Subjects: '; ...Astronomy, Astrophysics and Cosmology...

2
by Bergeron, P. J., Hecht, Friedrich
Published 1958
Springer Berlin Heidelberg
Subjects: '; ...Astronomy, Astrophysics and Cosmology...

3
by Hecht, Friedrich
Published 1955
Springer Berlin Heidelberg
Subjects: '; ...Astronomy, Astrophysics and Cosmology...