research scientist university official
Fellow American Association for the Advancement of Science (chairman section O 1978); Phytopath. Society (editorial board journal 1965-68, councilor at large 1968-70)
1965 - 1968
International Society Plant Pathology (council 1968-73)
1968 - 1973
American Institute Biological Scis.
California C. of C. (agricultural committee from 1968)
National Association State Univs. and Land Grant Colleges (chairman division agriculture 1972-73, executive committee 1974-76)
1972 - 1973
Western Association State Agricultural Experiment Station Directors (chairman 1975)
Phi Beta Kappa
Sigma Xi.