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Pierce GE, English CW. Solid phase system for aerobic degradation. US Patent 5,585,272 dated Dec 17 1996

Pierce GE. Biofilter for bioremediation of compound. US Patent 5,571,705 dated Nov 5 1996

Pierce GE, Smith CV. Methods for fluid phase biodegradation. US Patent 5,633,164 dated May 27 1997

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