Advertising Marketing 30 Research 22 Management 11 Sales promotion 8 Marketing research 7 Commercial art 6 Periodicals 6 Congresses 5 Costs 5 Economic aspects 5 Handbooks, manuals, etc 5 History 5 Advertising agencies 4 Advertising, Magazine 4 Cigarettes 4 Linguistic Aspects 4 Mathematical models 4 Psychological aspects 4 Public relations 4 Small business 4 Advertising campaigns 3 Consumers 3 Evaluation 3 Graphic arts 3 Law and legislation 3 Readership surveys 3 Sales management 3 Self-regulation 3 Social conditions 3