Koba, Susan. <br/><br/>
Hard to teach biology concepts / 
By Susan Koba, Anne Tweed. 
 - 2nd ed. 
 - Aelington :  NSTA,  2014. 
 - xvi, 336 p. ;  00 cm. 
<br/><br/><label>ISBN: </label>9781938946486 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology.
<br/><br/><label>Dewey Class. No.: </label>570.712  / KOB