MACGILLIVRAY,M.E <br/><br/>
APHIDS INFESTING POTATOES IN CANADA;A FIELD GUIDE 

 - OTTAWA,CANADA  RESEARCH STATION,FEDERATION  1979 
 - 23P. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>APHIDS---CANADA(2) AGRICULTURAL PESTS-------CANADA
<br/><br/><label>LC Class. No.: </label>SB 945  / .M33 1979