My labour in the field of social aid
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書誌事項
My labour in the field of social aid
[s.n.], 1950
3rd ed
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注記
Speech delivered Dec. 5, 1949 to a session of the first American Congress of Industrial Medicine
My labour in the field of social aid
[s.n.], 1950
3rd ed
Speech delivered Dec. 5, 1949 to a session of the first American Congress of Industrial Medicine