Boek
| Titel | 1275B Navigation instruments Vol. 1 (section 1: indicators (incompl), 2: altimeters (incompl), 3: compasses (incompl), 4: drift instruments, 5: astronomical instruments, 6: plotting instruments, 7: computing instruments, 8: miscellaneous, 9: compasses - general |
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| Objectnaam | Air Publication |
| Objectnummer | T4143 |