| http://www.w3.org/ns/prov#value | - pressure therein exceeds ambient pressure; and a deodorizing filter assembly secured to said one wall within said pouch for deodorizing gases exiting said pouch through said first flap vent; said assembly including a planar filter enclosed in a flat envelope having an inner panel of gas-permeable liquid-impervious sheet material and an outer panel of flexible gas- and liquid-impervious sheet mater
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