NO / L (semi -log scale ) 
160 
Psyche 
[June 
23 22 
1975 
SAMPLE OATE 
Figure 6. Average density of Platvstethus spiculus and Haematobia irritans 
larva, in 12-hr-old bovine feces from green, irrigated pastures; Calexico, California, 
1975 (+' 05 Conf. limit shown above each mean). 
t 1 r 
22 N '9 
OC» Nov 
• 974 
