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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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tannic_acid,_or_tannin
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1992-09-01
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268b
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8 lines
A stringent substance, composed of several
phenol rings, occurring in the bark, wood,
roots, fruits, and galls (growths) of certain
trees, such as the oak. It precipitates
gelatin to give an insoluble compound, used
in the manufacture of leather from hides
(tanning).