35 Business management services; advertising for others effected by means of direct mail, newspapers, magazines, professional journals, and trade publications; business administration, namely, cost analysis, accounting, auditing, business research, business appraisals, compilation and dissemination of business information, economic forecasting, business investigations, market research, marketing studies, personnel administration, public relations and tax preparation; office functions, namely, bookkeeping, document reproduction, computerized database management payroll preparation, and corporate secretarial services