Kelen, Nicholaus, 1894–
Nationality: Undetermined, possibly 
(Germany)
Identities and Authority Control
- Open Library: OL5328330A
- pdbooks.info ID: 82239
Nicholaus Kelen Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
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| Gewichtsstaumeuern und massive wehre | 1933 | Author | |  |  | | | ||