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- [6] USE OF ALKALI SOLUBILITY FOR DETERMINING YIELD INCREASES IN POLYSULPHIDE PULPING OF SPRUCE AND PINE NORSK SKOGINDUSTRI, 1965, 19 (09): : 344 - +
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- [8] Modified polysulphide (AQ)-pulping of softwood 1997 PULPING CONFERENCE, BOOKS 1 AND 2, 1997, : 721 - 728
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