"Rehabilitation of juvenile delinquents, Kansas City, Mo." . . "Délinquance juvénile Missouri Kansas City." . . "Éducation Coopération internationale." . . "Juvenile delinquency, Missouri, Kansas City." . . "Adolescent Psychology." . . "Éducation coopération." . . "Délinquance juvénile." . . "Psychology, Adolescent." . . "Education, Cooperative." . . "Juvenile Delinquency." . . . "Four hundred loosers" . . . . . . . . . . . . . . . . "400 losers [delinquent boys in high schools]" . . . "400 losers" . . . "400 losers"@en . "400 losers : delinquent boys in high school"@en . . . . . . . . . . . . . . "Education, Special." . . "Work." . . . .