BUSINESS & ECONOMICS Business Affaires E-commerce Electronic commerce Management Information Systems Management information systems Mathematical models Strategische aspecten Systèmes d'information de gestion Wiskundige modellen Aufsatzsammlung COMPUTERS Commerce électronique Direct E-Commerce Internet Marketing Mail Order Management informatiesystemen Managementinformationssystem Marketing Modèles mathématiques Multilevel Telemarketing Application service providers Business logistics Commerce �electronique Contracting out Data processing Electronic data processing departments