TY  - BOOK
TI  - Youth sexuality 1998: repeat survey of 14-17-year-olds and their parents on behalf of ths Federal Centre for Health Education : results of the current representative survey
U1  - 306.7 
PY  - 1998///
CY  - Cologne
PB  - Federal Centre for Health Education
KW  - Νεολαία
KW  - Σεξουαλική συμπεριφορά
KW  - Youth
KW  - Sexual behavior
ER  -