006210000a22001330004500003000900000005001700009110014600026245019400172562003100366264004900397300000900446041000800455650002400463PH-MaWHO20241108112301.0  aJoint WHO/International Youth Foundation Meeting on Approaches to Adolescent Health and Development : Principles for Success (1991 : Geneva).  aApproaches to adolescent health and development : principles for success : [report of] a Joint World Health Organization/International Youth Foundation Meeting, Geneva, 20-22 November 1991.  aWHO/ADH/92.3.--Unpublished  aGeneva : bWorld Health Organization,c1992.  a30p.  aeng  aAdolescent medicine