Semi-chemical pulping process
作者： Burton E Helberg , Charles H Davenport
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lens.org 参考文章(3)
Seaman Stewart Elmer, Process of producing cellulose ,(1930)
Jason Leslie Merrill, Charles Frank Sammet, Process for treating fiber-yielding materials. ,(1911)
Edmund Tyborowski, Leon Brech, Manufacture of cellulose from raw vegetable materials containing cellulose fibers. ,(1911)