15

A situational analysis of adolescent smoking

Year:
1984
Language:
english
File:
PDF, 329 KB
english, 1984
33

Sampling bias due to consent procedures with adolescents

Year:
1983
Language:
english
File:
PDF, 397 KB
english, 1983
36

Subject Attrition in Prevention Research

Year:
1997
Language:
english
File:
PDF, 255 KB
english, 1997