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Scientific American: The Amateur Scientist
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Scientific American - The Amateur Scientist (Tinker's Guild)(2000).iso
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amsci01
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1961
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02
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1961-02-01.gif
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Graphics Interchange Format
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2000-09-11
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37KB
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279x741
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8-bit (256 colors)
Labels:
barrier reef
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bulletin board
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case
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door
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earth
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fence
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refrigerator
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shelf
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sky
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windowpane
OCR:
the observer cye lens eycpiece ficld lens telcscope objective ficld repcating ystem reversed telescop underwater window mirror entrance pupil eyepiece sntrance