Mathewson, Robert. <br/><br/>
The how and why wonder book of birds / 
by Robert Mathewson. Illustrated by Walter Ferguson and Ned Smith. Editorial production: Donald D. Wolf. 
 - New York :  Grosset,  1973. 
 - 47 p. :  ill. 
<br/><br/> Describes general bird characteristics and techniques of bird watching. 
<br/><br/><label>ISBN: </label>0448040077 (deluxe ed.) 0448050099 (Wonder book ed.) 
<br/><br/><label>LCCN: </label>72086058 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Birds.
<br/><br/><label>Dewey Class. No.: </label>598