Porter, John,  active 1915-1929. <br/><br/>
The crop-grower's companion, 
by John Porter ... 
 - London,  Gurney and Jackson; [etc., etc.]  1929. 
 - xxi, 447 p.  illus., diagrs.  20 cm. 
<br/><br/><label>LCCN: </label>agr30000242  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crops and climate.<br/>Crops and climate.
<br/><br/><label>LC Class. No.: </label>S600.5  / .P67 1929 
<br/><br/><label>Dewey Class. No.: </label>631.5