Walker, John N. <br/><br/>
Rigid-frame greenhouse construction 

 - (Lexington) :  University of Kentucky. College of Agriculture Cooperative Extension Service,  (197?) 
 - 7 p.  : ilus. 
<br/><br/> Fotocopia 
<br/><br/><label>LCCN: </label>51135 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Invernaderos.