Illustrated Family Encyclopedia Volume 11 O-P

The comprehensive learning resource for the whole family. More than 5,000 articles on topics today's children need to know about from human development to cloning and weather to global warming -- are illustrated with 10,000 photographs and 2,500 specially commissioned artworks in this comprehensive three-volume set. The whole family will find this easy-to-use, multi-functional reference work a powerful key to a lifetime of learning. Compiled, edited, and designed by an experienced team of authors, consultants, editors, and advisors, the DK Illustrated Family Encyclopedia brings the reference library into the 21st century.