E F WOODCOCK
E F WOODCOCK
D H BOWMAN
D H BOWMAN
J W PORTER,F M STRONG, et al.
J W PORTER
C W BENNETT,E CARSNER, et al.
C W BENNETT
J I LAURITZEN,E W BRANDES,J MATZ
J I LAURITZEN
Some factors affecting the insecticidal action of pyrethrum extracts on the beet leafhopper [0.03%]
几种因素对除虫菊酯杀取食性叶蝉作用的影响研究
F H HARRIES,J D DeCOURSEY,R N HOFMASTER
F H HARRIES
C F POOLE,P C GRIMBALL
C F POOLE
W W GREEN,L M WINTERS
W W GREEN
R H LARSON,A R ALBERT
R H LARSON