Risk factors for early adolescent drug use in four ethnic and racial groups.
1993 ◽
Vol 83
(2)
◽
pp. 185-189
◽
1993 ◽
Vol 28
(14)
◽
pp. 1549-1563
◽
2000 ◽
Vol 9
(3)
◽
pp. 67-90
◽
1990 ◽
Vol 2
(3)
◽
pp. 265-285
◽