Pyenson, Louis  (1909- ). <br/><br/>
Plant Health Handbook :  A Guide to Better Gardening Indoors and Outdoors / 
Louis Pyenson. 
 - Westport, CT :  AVI Publishing Company,  1981. 
 - XI, 241 s. :  il., rys. ;  26 cm. 
<br/><br/><label>ISBN: </label>0870553771