35 Personnel recruitment, auctioneering, commerical information agencies, business inquiries, organization of exhibitions for cultural or education purposes, professional business consultancy, business organization consultancy, personnel management consultancy, business management and organization consultancy, book-keeping, auditing, office machines and equipment rental, computerized file management, business investigations, television advertising, marketing studies, business management of hotels, efficiency experts, photocopying, publication of publicity texts, import-export agencies, business management of performing artists, modeling for advertising or sales promotion, marketing research, marketing studies, opinion polling, organization of trade fairs for commercial or advertising purposes, public relations, employment agencies, personnel management, radio advertising, word processing, secretarial services, tax preparation, telephone answering for unavailable subscribers, sales promotion for others, rental of advertising space, advertising by mail order, demonstration of goods, publication of publicly texts, economic forecasting