00847cam a2200265 4500 544116490 TxAuBib 20001113120000.0 ||||||s1985||||||||||||||||||||||||und|u 8518862 9780870445781 0870445782 TxAuBib Why in the world. Washington, DC : National Geographic Society, 1985. 104 p. Books For World Explorers Questions and answers on a wide range of subjects, including geophysical sciences, physiology, natural history, physics, and technology. 20001113. Science. Technology. Questions and answers. Books For World Explorers. TXSTN