Audesirk, Teresa. <br/><br/>
Biology :  life on earth / 
Teresa Audesirk, Gerald Audesirk, Bruce E. Byers. 
 - 8th ed. 
 - Upper Saddle River, NJ :  Pearson Prentice Hall,  c2008. 
 - xxvii, 116 p. :  col. ill. ;  28 cm.