Updated Third Edition. Family-friendly volume has over 5,000 new words and tenses from all areas of vocabulary, with special emphasis on high technology, science, medicine and social change. Biographical and geographical entries have been completely updated, reflecting current events and the latest census. Includes over 400 updated line drawings. Other features include redesigned tables for world alphabets, bible, calendar, currency, elements, geologic time and measurement as well as a style guide and a handy section for forms of address. Thumb-Indexed.