File:NPH NH3 frequency low frequencies.jpg
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NPH_NH3_frequency_low_frequencies.jpg (553 × 54 pixels, file size: 14 KB, MIME type: image/jpeg)
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current | 14:32, 23 October 2014 | ![]() | 553 × 54 (14 KB) | Np1612 (talk | contribs) | |
11:07, 21 October 2014 | ![]() | 571 × 32 (12 KB) | Np1612 (talk | contribs) |
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