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Contributor Notes
Received for publication October 2, 1972. Contribution No. 513, Department of Horticulture and Forestry, Kansas Agricultural Experiment Station, Kansas State University, Manhattan, Kansas, 66506.
Former Research Assistant. Present address: Department of Natural Resource and Environmental Studies Alabama A & M University, Normal, Alabama.
Olericulturist. Authors express their appreciation to P. R. Enslin, National Chemical Research Laboratory, Pretoria, South Africa, and to David La vie, Weizman Institute of Science, Rehovoth, Israel, for providing pure cucurbitacins; to R. Graham Cooks, Dept. of Chemistry for assistance in mass spectrometry and to W. E. Klopfenstein, Dept. of Biochemistry for assistance in gas chromatography.
