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Google圖書搜尋
Young Children in European Countries in the Present Economic and Social Period
James Frederick Rogers
John Ward Studebaker
Mary Dabney Davis
Timon Covert
Walter James Greenleaf
出版
U.S. Government Printing Office
, 1936
URL
http://books.google.com.hk/books?id=86XI0AEACAAJ&hl=&source=gbs_api