Documents pertaining to the Epidemiologic Studies Program directed by Ephraim Kahn. Includes progress reports, peer review by Anderson, draft report on Panel on Scientific and Technical Considerations, Statement to the EPA Pesticide Policy Advisory Committee, and "A look at the Problems of Pesticides Underreporting and Underrecognition as it Pertains to the California Fieldworker." Includes material on the evolution of California re-entry periods.