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World Book 1997 4.0
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The World Book Multimedia Encyclopedia v4.00.iso
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500
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lr000002.gif
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Graphics Interchange Format
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1996-07-07
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37KB
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622x265
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8-bit (32 colors)
Labels:
text
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diagram
OCR:
Elevator bringing muck to the surface Rock Disk cutters Shield Conveyor Muck Shaft Completed tunnel GOTTGS Rail car Tunnel-boring machine Concrete section
