Why in the world? 

 - Washington, D.C. :  National Geographic Society,  [c1985] 
 - 104 p. :  col. ill. ;  28 cm. 
 - Books for world explorers .
<br/><br/> Includes index. 
<br/><br/> Questions and answers on a wide range of subjects, including geophysical sciences, physiology, natural history, physics, and technology. 
<br/><br/><label>ISBN: </label>0870445731 0870445782 (lib. bdg.) 
<br/><br/><label>LCCN: </label>85018862  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Miscellanea--Juvenile literature.<br/>Technology--Miscellanea--Juvenile literature.<br/>Science--Miscellanea.<br/>Technology--Miscellanea.<br/>Questions and answers.
<br/><br/><label>LC Class. No.: </label>Q163  / .W493 1985 
<br/><br/><label>Dewey Class. No.: </label>