| http://www.w3.org/ns/prov#value | - 1 to about 8; --(CH.sub.2).sub.n --COOR.sub.3, where n is an integer in the range of 1 to about 8 and R.sub.3 is a straight- or branched-chain alkyl constituent having from 1 to about 8 carbon atoms; H; Li; or Na; --(CH.sub.2).sub.n --OR.sub.4,
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