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The Epic Interactive Encyclopedia 1998
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Epic Interactive Encyclopedia, The - 1998 Edition (1998)(Epic Marketing).iso
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INFOTEXT
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1992-09-03
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352b
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10 lines
A gated chamber installed in canals, rivers,
and seaways that allows boats to sail from
one level to another. A lock has gates at
each end, and a boat sails in through one
gate when the levels are the same outside and
inside. Then water is allowed in (or out of)
the lock until the water level rises (or
falls) to the new level outside the other
gate.