Insecticides, fungicides and materials used in insecticides and fungicides / 
Ed. by George S. Langford and oth.; Entoma 
 - 7-th ed. 
 - New Jersey :  Department of entomology,  1947. 
 - 416 p. ;  ill.,  23 sm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant protection