Textile calculations: being a guide to calculations relating to the construction of all kinds of yarns and fabrics (1896)
Posselt, Emanuel Anthony, 1858- · Philadelphia, E. A. Posselt · leaf 107
9i The microscopical examination of fibres, yarns and fabrics is in the absence of experience,sometimes misleading, hence it is well in all doubtful cases to apply some corroborative test
Textile industry
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