Langhans, Robert W.,  1929- <br/><br/>
Greenhouse management :  a guide to structures, environmental control, materials handling, crop programming, and business analysis / 
Robert W. Langhans ; line drawings by Virginia Langhans. 
 - Ithaca, N.Y. :  Halcyon Press of Ithaca,  1980. 
 - x, 239 pages  Illustrations ;  24 cm. 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>0960400605 
<br/><br/><label>LCCN: </label>80114393 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Greenhouse management.
<br/><br/><label>LC Class. No.: </label>SB415  / .L26 
<br/><br/><label>Dewey Class. No.: </label>635.9/823/068