00556cam|a2200169 a 450000500170000000800410001703500150005805000140007311000640008724500260015126000270017730000090020450501080021365000350032165000140035665000160037020260817161550.0050730s1991    th      r     000|0 eng d  a.b10054492 4aHQ27bU532 aUnesco.bPrincipal Regional Office for Asia and the Pacific10aAdolescence education  aBangkok :bs.n.,c1991  a4 v.0 av. 1. Physical aspect -- v. 2. Social aspects -- v. 3. Sex roles -- v. 4. Sexually transmitted diseases 0aYoung adultsxSexual behaviour 0aEducation 0aAdolescence