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[2]
DANZIG F, 1972, AD AGE, V43, P25
[3]
DAY RL, 1973, MARKETING ACTION, P26
[4]
DeCarlis P, 1973, N Y State Dent J, V39, P350
[5]
GOULDING PC, 1973, AM DENT ASSOC NEWSLE, V3, P218
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KARU SE, 1973, FOOD DRUG ADMINISTRA
[8]
WEBSTER FE, 1971, MARKETING COMMUNICAT, P391
[10]
1970, J AM DENT ASSOC, V80, P1377