2
by Helms, Ludger.
Published 2004
(CARLI) (Other Sources: (UIUdb)4972242)
Book
3
Published 2012
Other Authors: '; ...Helms, Ludger....
(CARLI) (Other Sources: (AUGdb)227300)
Book
4
Published 2000
Other Authors: '; ...Helms, Ludger....
Book
5
Published 2012
Other Authors: '; ...Helms, Ludger....
(CARLI) (Other Sources: (UIUdb)6946014)
Book Electronic
6
Published 1999
Other Authors: '; ...Helms, Ludger....
(CARLI) (Other Sources: (UIUdb)4434531)
Book
7
by Crepaz, Katharina,
Published 2016
Other Authors: '; ...Helms, Ludger,...
(CARLI) (Other Sources: (ICCdb)306041)
Book Electronic
8
Published 2012
Other Authors: '; ...Helms, Ludger....
(CARLI) (Other Sources: (LLCdb)118350)
Book
9
Published 2012
Other Authors: '; ...Helms, Ludger....
(CARLI) (Other Sources: (UIUdb)7028300)
Book
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