Mathis, William. <br/><br/>
The Gardener�s Guide to Growing: Hardy Perennial Orchids 
Mathis, William. 
 - Pennsylvania  The Wild Orchid Company  2005 
<br/><br/><label>ISBN: </label>0976533502 
<br/><br/><label>LC Class. No.: </label>SB-434.M37-2005