Progress of Repeaters of the Class of 1912 of the Public Schools of Washington, D. C.

समान संसाधन

• Congress of Hygiene: Washington, D.C., September 23—28, 1912
  प्रकाशित: (1911)
• Public Health Plans and Problems of Washington, D. C.
  द्वारा: Grant, Murray
  प्रकाशित: (1964)
• Venereal disease education in Washington, D.C
  द्वारा: Conn, Robert H.
  प्रकाशित: (1965)
• Size of Classes and School Progress
  द्वारा: Cornman, Oliver P.
  प्रकाशित: (1909)
• Class Size and School Progress
  द्वारा: Boyer, Philip A.
  प्रकाशित: (1914)