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Technology, Employment, and Output Per Man in Iron Mining
Nicholas Yaworski
National Research Project on Reemployment Opportunities and Recent Changes in Industrial Techniques (U.S.)
出版
Work Projects Administration, National Research Project
, 1940
URL
http://books.google.com.hk/books?id=ToTFBKxLkPQC&hl=&source=gbs_api
EBook
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