Bielefeld, Friedrich Ernst, 1884–
Nationality: Undetermined, possibly 
(Unknown (outside United States))
Identities and Authority Control
- pdbooks.info ID: 58329
Friedrich Ernst Bielefeld Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
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| Kommt der kohlenstaub-Dieselmotor oder die hochdruckgas-Dieselmaschine? | 1928 | Author | |  |  | | | ||