Chloradioxins-origin and fate : a symposia sponsored by the Division of Pesticide Chemistry at the 162nd meeting of the American Chemical Society, Washington, D. C., Sept.16-17, 1971. Etcyl

Air pollution damage to vegetation : a symposium sponsored by the Division of Agricultural and Food chemistry at the 161st meeting of the American Chemical Society, Los Angeles, Calif., March 31-April 1, 1971. Ed. by John A. Naegele.

Trace elements in the environment : a symposium sponsored by the Division of Water, Air and Waste Chemistry at the 16z nd meeting of the American Chemical Society, Washington, D. C., Sept. 15, 1971 Evaldo l. Kothny, ed.

Solvents theory and practice, a symposium sponsored by the Division of Organic Coatings and Plastic Chemistry at the 162 nd meeting of the American Chemical Society, Washington, D. C., Sept. 15-16, 1971

Dielectric properties of polymers : proceedings of a symposium heldon March 29-30, 1971, in connectionwith the national meeting of the American Chemical Society in Los Angeles, California, March 28-April 2, 1971

Reverse osmosis membrane research, based on the symposium on polymers for desalination held at the 162 d national meeting of the American Chemical Society in Washington, D. C., September 1971.

Water structure at the water-polymer interface : proceedings of a symposium held on March 30 and April 1, 1971, at the 161 st national meeting of the American Chemical Society

Sulfur research trends : the third annual Mardi Gras symposium sponsored by the Louisiana section of the American Chemical Society at Loyola University, New Orlans, La., Feb. 18-19,1971

Aerosols and atmospheric chemistry : the Kendall Award Symposium honoring Milton Kerker, at the proceedings of the American Chemical Society, Los Angeles, California, March 28-April 2, 1971

Molecular sieve zeolites : the second international conference co-sponsored by the Division of Colloid and Surface Chemistry, and Division of Petroleum Chemistry, and the Division of Physical Chemistry of the American Chemical Society and Worcester Pollytechnic Institute at Worcester Polytechnic Institute Worcester, Mass., Sept. 8-11, 1970. Edith M. Flanigen and Leonard B. Sand, conference co- chairmen.

Block polymers : proceedings of the symposium on block polymers at the meeting of the American Chemical Society in New York City in September 1969

Radionuclides in the environment : a symposium sponsored by the Division of Nuclear Chemistry and Technology at the 155th meeting of the American Chemical Society, San Francisco, Calif., April 1-3, 1968