RT Article T1 Academic goals, achievement, and age at first sexual intercourse: Longitudinal, bidirectional influences JF Adolescence VO 36 IS 144 SP 767 OP 787 A1 Schvaneveldt, Paul L. A1 Lee, Thomas R. A1 Berry, E. Helen A1 Miller, Brent C. A2 Lee, Thomas R. A2 Berry, E. Helen A2 Miller, Brent C. LA English YR 2001 UL https://krimdok.uni-tuebingen.de/Record/1912447975