Cambios sociales en la juventud : la experiencia de los Estados Unidos /

by Petersen, Anne C., Petersen, Anne C., Leffert, Nancy

Adolescence and Youth Psychological Development in a Changing World /

by Conger, John Janeway
Published 1984

El mundo de Parménides : ensayos sobre la ilustración presocrática /

by Popper, Karl Raimund 1902-1994, Popper, Karl Raimund 1902-1994
Published 1999

Promoting the health of adolescents : new directions for the twenty-first century /

by Millstein, Susan G. 1950-
Published 1993