Vuorela, Irmeli  1938-2012 <br/><br/>
Relative pollen rain around cultivated fields / 
Irmeli Vuorela. 
 -- Helsinki :   Societas pro Fauna et Flora Fennica,   1973 
 - 27 p. -- 
 (Acta Botanica Fennica  ; 102).
<br/><br/>ISBN 951-661-010-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Polen
<br/><br/><label>Universal Decimal Class. No.: </label>581.33