Watkins, Patricia A. <br/><br/>
General science / 
by Patricia A. Watkins. 
 - Florida :  Harcourt Brace Jovanovich,  1989. 
 - 681 p. :  ill., col ;  26 cm. 
<br/><br/><label>ISBN: </label>0153643056 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science.