23. 
24. 
25. 
26. 
27. 
28. 
29. 
30, 
31. 
32. 
33. 
-44- 
1936. Red spider. Calif. Fruit Growers Exch . Pest Control Cir. 
21: 2. 
1937. Red spider persists in some areas. Calif. Fruit Grocers 
Exch. Pest Control Cir. 31: 2. 
1937. Red spider. Calif. Fruit Growers Exch. Pest Control Cir. 
35: 2. 
1937. The red spider situation. Calif. Fruit Growers Exch. Pest 
Control Cir. 36, 4 pp. 
1938. Red spider. Calif. Fruit Growers Exch. Fest Control Cir. 
37: 4. 
1938. Importance of vinter red scale treatment. Calif. Fruit 
Grocers Exch. Fest Control Cir. 38: 2-3. 
1938. Water rot e.~ain appears in oil-sprayed navel orchards. Red 
spider. Calif. Fruit Growers Exch. Pest Control Cir. 39: 5 
1938. . Present, spider condition. Calif. Fruit Grocers Exch. Fest 
Control Cir. 41, 4 pp. 
1938. [Derris-o.il.] Ca.lif. Fruit Growers Exch. Pest Control Cir. 
43: 4. 
1939. [ Red spider.] Calif. Fruit Growers Exch. Pest Control Cir. 
49, 4 pp. 
1939. Red spider.. Calif. Fruit Growers Exch. Pest Control Cir. 
. 52: 3.. 
