Koehler, Robert Philip
Nationality: 
(Unknown)
Identities and Authority Control
- pdbooks.info ID: 14276
Robert Philip Koehler Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
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| Compendio de radiotelefonía | 1924 | Author |  |  | | | | ||
| Compendio de radiotelefonía | 1932 | Author | |  | | | | ||
| Radio simplified; what it is--how to build and operate the apparatus | 1922 | Author | |  | | | |    
| |
| The spell-to-write spelling books | 1922 | Author | | | | | | ||