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Sampling and Measuring Methods for Determining Fineness and Uniformity in Wool
Elroy M. PohleUnited States. Department of AgricultureLanoy Nelson HazelHenry R. Keller
出版U.S. Department of Agriculture, 1947
URLhttp://books.google.com.hk/books?id=iBQWNJVLShcC&hl=&source=gbs_api
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