Hough,Walter S <br/><br/>
Spraying,Dusting and Fumigating of plants  Principles and Application 

 - New york  Macmillan company  1951 
 - 726 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Spraying-plants
<br/><br/><label>Dewey Class. No.: </label>632.9  / H81S