Johnson, Frederick S. <br/><br/>
Report on preliminary investigation on chemical weed control in Venezuela, 1951 

 - New York :  IBEC Research Institute,  1954 
 - 20 p.  : ilus 
 - Bulletin  ; 2 .
 - Bulletin  ; 2 .
<br/><br/><label>LCCN: </label>17285 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Malas hierbas--Control.<br/>Malas hierbas--Venezuela.