McGraw-Hill yearbook of science & technology 1970-1971. 

 - 5th ed. 
 - New York :  McGraw-Hill,  c1971. 
 - 481 p. : 
<br/><br/> Comprehensive coverage of the important events of the year 1970. 
<br/><br/><label>ISBN: </label>0070792801 (set) : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Dewey Class. No.: </label>505  / Mc