How things are made. 

 - [Washington, D.C.] :  National Geographic Society,  c1981. 
 - 103, [1] p. :  col. ill. 
 - Books for world explorers. .
<br/><br/> Prepared by the Special Publications and School Services Division; writers: Arnold B. Ajello, and others; illustrations: Barbara Gibson. 
<br/><br/><br/>Summary: Explains how a variety of products--such as kaleidoscopes, baseballs, marbles, matches, toothpaste, light bulbs, and bridges--are made, highlighting the ways in which manufacturing techniques have changed over the years. 
<br/><br/><label>ISBN: </label>0870443348 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Manufactures.<br/>Manufacturing processes.