1. New bubbler design for atmospheric sampling
2. Billings, C.E., Dennis, R., Record, F.A., Warneck, P., Ann, M.L. and Sing, C.Y., “Fate of Sulfur Dioxide in the Atmosphere”, Proceedings of the 62nd Annual APCA Meeting, New York, paper no. 69-156 (1969).
3. Diffusion Measurements in the 10–100 km Range