• publisher: Washington, Govt. print. off.
  • creator: United States. Children's Bureau Williamson, Margaretta A., 1891-
  • contributor: Williamson, Margaretta A., 1891-
  • years: 1915.
  • pages: 36 p.
  • class: RA610
  • notes: Bureau publication no. 11.
  • download: pdf file