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Page 12 · column 4 of 6 · from the scan, no model involved
SCIENTISTS DEVELOP ENEMIES FOR THE FLY
j When flies did the seemingly impossible and developed a resistance to the modern miracle insecticide DDT, agricultural* scientists scurried back to their laboratories to find another and better method of killing the familiar pest
Fly baits, combining an old principle with the use of new chemical insecticides, are proving to be the best means of meeting this problem.
Several fly-bait materials that are effective in killing resistant
pended for 60 days.
66.3%