measuring the effectiveness and value of advertising media such as telephone directory pages, newspapers, radio, television, and the worldwide computer network by counting the number of telephone calls placed by the public in response to a particular advertisement in one of such media

'advertis':7,38 'call':28 'comput':20 'count':23 'directori':12 'effect':3 'measur':1 'media':8,43 'network':21 'newspap':14 'number':25 'one':40 'page':13 'particular':37 'place':29 'public':32 'radio':15 'respons':34 'telephon':11,27 'televis':16 'valu':5 'worldwid':19

DCCI

Owners

Goods & Services