scholarly journals Changing trends of tobacco use in a teenage population in western Pennsylvania.

1986 ◽  
Vol 76 (2) ◽  
pp. 196-197 ◽  
Author(s):  
J Guggenheimer ◽  
T G Zullo ◽  
D C Kruper ◽  
R S Verbin
1989 ◽  
Author(s):  
R. D. Weiss ◽  
S. M. Mirin ◽  
M. L. Griffin ◽  
J. L. Michael
Keyword(s):  

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