word1 word2 | All words must be present |
"exact phrase" | Match the exact phrase |
word1 OR word2 | Either word matches |
NOT word / -word | Exclude this word |
word* | Prefix match (usually automatic) |
a NEAR/5 b | Words within N positions (Hybrid mode) |
| Airship Number | Manufacturer | Military Branch | Assigned Base(s) | Beginning Service Date | Last Service Date | Postal Marking | Dispatch Type | Value | Notes |
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