Abstract Unavailable.

Pear decline project research workers involved in the preparation of the report from which this condensation was obtained include: J. Blair Bailey, D. D. Jensen and John L. Nickel, Department of Entomology and Acarology, and Y. Tanada, Department of Invertebrate Pathology, University of California, Berkeley; Peter B. Catlin, W. H. Griggs, and Kay Ryugo, Department of Pomology; and T. A. Shalla, Department of Plant Pathology, U. C., Davis; R. C. Dickson, Department of Entomology; Henry Schneider, Pamela Tsao and T. S. Pine (USDA), Plant Pathology; George Kaloostian, Entomology (USDA), U. C., Riverside.