Johannsen, Otto, 1882–
Nationality: Undetermined, possibly 
(Germany)
Identities and Authority Control
- Open Library: OL2275847A
- pdbooks.info ID: 31177
Otto Johannsen Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
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| Geschichte des eisens: im auftrage des Vereins deutscher eisenhüttenleute gemeinverständlich dargestellt | 1924 | Author | |  | | | | ||