Washburn, F. L <br/><br/>
An entomological calendar  / 
F. L. Washburn 
 - St. Anthony Park  :   University of Minnesota. Department of Agriculture 
 - 7 p. 
 - University of Minnesota Press Bulletin; 26 .
<br/><br/><label>LCCN: </label>201801 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Entomología -- Calendarios