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Graphics Interchange Format  |  2000-09-11  |  19KB  |  370x240  |  8-bit (210 colors)
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OCR: Strike point along anti- nodal line first num -note patter 1,870 hertz 3,010 hertz 1,810 nertz- Nodal line for ,672- and 4,197 hertz resonances 2,573 hertz Strike point pattern