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methods of treating brittle vegetable fibre, as the samenhaare of kapok, calotropis, akon, asclepias, and the so-called pflanzenseiden in general to verspinnbar and evenly färbbar and yarn and twistin
methods of treating brittle vegetable fibre, as the samenhaare of kapok, calotropis, akon, asclepias, and the so-called pflanzenseiden in general to verspinnbar and evenly färbbar and yarn and twistin