76290891
Jul 30, 2001
Jun 3, 2003
PUBLICATION OF BOOKS, MAGAZINES AND NEWSLETTERS IN THE FIELDS OF PHYSICS, PHYSICAL SCIENCES AND ENGINEERING; AND EDUCATIONAL SERVICES, NAMELY, DEVELOPMENT AND DISSEMINATION OF EDUCATIONAL MATERIALS IN THE FIELDS OF PHYSICS, PHYSICAL SCIENCES AND ENGINEERING; AND EDUCATIONAL SERVICES, NAMELY, CONDUCTING CLASSES, SEMINARS, CONFERENCES AND WORKSHOPS IN THE FIELDS OF PHYSICS, PHYSICAL SCIENCES AND ENGINEERING
Education and Entertainment