Frear , Donald E.H. . <br/><br/>
A Catalogue of Insecticides and Fungicides /  Textual Documents 
Donald E.H. Frear. 
 - 1st ed. / 
 - U.S.A. :  Chronica Botanica Co. ,  1947. 
 - xii,203p. :  ill ;  27cm . 
<br/><br/><label>Subjects--Index Terms: </label>Botany Insecticides G-Botany 
<br/><br/><label>Dewey Class. No.: </label>581.28  / F 87 C