TY  - GEN
T1  - Approaches to positive youth development
A2  - Silbereisen, R. K. 1944-
A2  - Lerner, Richard M.
LA  - English
PP  - Los Angeles
PB  - Sage Publications
YR  - 2007
UL  - https://colectivo.uloyola.es/Record/ELB139669
OP  - 352
CN  - HQ796 .A6865 2007
KW  - Youth development.
KW  - Youth : Services for.
KW  - Electronic books.
ER  -