Click on Photo to see actual item. Ships FIRST CLASS within 16 HOURS (weekdays and Saturdays)! Ships in a BOX or RIGID mailer with padding. Ships from California. 4th printing, 1969 Edition. Pages: not written on, clean, moderate to dark tanning. Cover: dark spotting along edges, otherwise, clean, bright. rubbing to edges and corner tips, several creases. ABOUT THIS BOOK: Under 250 headings?from "Absolute Zero" to "Zodiac"?Isaac Asimov explores, explains and illuminates the scientific vocabulary. In all, some 1,500 terms are traced through history, from their simple roots in the language of bygone times?to their complicated usages today.