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Guinness Multimedia Disc of Records 1992
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Guinness Disc of Records 1992 (DOS Version).bin
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1991-06-10
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184b
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Slowest wing beat - At 300 per min, the swallowtail butterfly (Papilio machaon) has the slowest wing beat of any insect. The average is 460-636 beats per min. (Photo: Bruce Coleman)