41 Organization, arranging and conducting of exhibitions, conferences, conventions, seminars, workshops, expositions and special events for educational purposes in the fields of airport infrastructure and aviation and distribution of course material in connection therewith; providing information and advice to exhibition and conference attendants, visitors and exhibitors relating to organizing educational exhibitions, conferences, expositions and special events in the fields of airport infrastructure and aviation, in-person and electronically on a website; education services, namely, providing conferences, seminars, workshops and courses in the fields of airport infrastructure and aviation; providing training in the fields of airport infrastructure and aviation; publication of books, magazines, journals, newsletters, pamphlets, brochures and reviews in the fields of airport infrastructure and aviation; publishing of nondownloadable electronic publications, namely, texts, books, reviews, magazines journals, and newsletters in the fields of airport infrastructure and aviation