Duncan, George A. <br/><br/>
Greenhouse coverings 

 - Lexington, Kentucky :  University of Kentucky 
 - (197?) 
<br/><br/> Fotocopia 
<br/><br/><label>LCCN: </label>59586 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Invernaderos.