/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Colby%2C%20Mary%20Ruth%2C%22&sort_by=relevance&format=rss 2 0 50 ISBN: /cgi-bin/koha/opac-detail.pl?biblionumber=36111 By Colby, Mary Ruth,.
Washington, U.S. Govt. print. off., 1933 .
v, 48 p. , At head of title: United States Dept. of labor, Frances Perkins, secretary. Children's bureau, Grace Abbott, chief.

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]]> /cgi-bin/koha/opac-detail.pl?biblionumber=36111 ISBN: /cgi-bin/koha/opac-detail.pl?biblionumber=36354 By Colby, Mary Ruth,.
Washington, U.S. Govt. Print. Off., 1941 .
v, 130 p. , At head of title: United States Department of Labor, Francis Perkins, secretary. Childrens Bureau, Katherine F. Lenroot, chief. 23 cm..

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