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27 April 2026
| 20:46 | Instruments and sensors to measure environmental parameters (diff | hist) . . (-33) . . Dronkers J (talk | contribs) |
| N 17:19 | Submarine acoustic techniques (diff | hist) . . (+11,760) . . Dronkers J (talk | contribs) (Created page with "==Introduction== File:Singlebeam.gif|thumb|right|350px|Figure 1: Singlebeam. The transducer emits sound (blue cone), which is reflected (white rings) and partly received ag...") |