TY  - JOUR
T1  - Poll trends: Trends in media usage
AU  - Mayer, William G.
PY  - 1993
DO  - 10.1086/269398
SP  - 593
EP  - 611
JO  - Public Opinion Quarterly
VL  - 57
IS  - 4
SN  - 0033-362X
ER  -