Feather, Ralph M. Jr. <br/><br/>
Science connections/ 
Ralph M. Feather Jr. 
 - U.S.A. :   Merrill pub. company,  c1990 
 - x 566 p. :  illustration ;   26 cm. 
<br/><br/>Include index. 
<br/><br/><label>ISBN: </label>0-675-06618-2 
<br/><br/><label>Dewey Class. No.: </label>Circ. 500 S27 1990