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Data on Employment and Unemployment

James McCauley LandisAmerican Statistical Association. Committee on Governmental Labor StatisticsPollak Foundation for Economic Research

其他書名	Recommendations by the Committee on Governmental Labor Statistics of the American Statistical Association
出版	Pollak Foundation for Economic Research, 1929
URL	http://books.google.com.hk/books?id=zbR6PQAACAAJ&hl=&source=gbs_api