1
by Galler, Heinz, Heilig, Gerhard, Steinmann, Gunter
Published 1994
Physica-Verlag HD
Subjects: '; ...Population Economics...

2
by Steinmann, Gunter
Published 1984
Springer Berlin Heidelberg
Subjects: '; ...Population Economics...

3
by Steinmann, Gunter
Published 1988
Springer Berlin Heidelberg
Subjects: '; ...Population Economics...