1. 1. R. J. HERSCHLER, and S. W. JACOB, 1966 . DMSO-A New Drug From Lignin. This Annal.
2. 2. F. HARRIES, 1965 . J. Econ. Entomol. In press.
3. 3. L. E. WALLACE, 1964 . (Entomology) Bozeman. Unpublished results.
4. 4. C. D. LEONARD, 1964 . Citrus Exper. Station, Lake Alfred, Fla. Unpublished results.