With assignments based on geography or a student's ethnic and cultural background as staples in many middle schools today, U В·X В·L presents a new resource devoted to physical geography. Designed specifically for students in grades 5-12, this 5-vol. Set includes information on physical properties and characteristics of nearly 200 countries. Included are approximately 200 alphabetically arranged entries; 200 maps; 450 black-and-white photographs, illustrations, graphs and tables; ''Words to Know'' section; world rankings; and a general index.