Studies on nicotine fumigation in greenhouses  / 
by Henry H. Richardson [et.al.] 
 - Washington  :   Department of Agriculture 
 - 15 p. 
 - EUA. Dept. of Agriculture circular; 684 .
<br/><br/><label>LCCN: </label>202835 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nicotina como insecticida