312,578 PROCEEDINGS Proceedings of the American Society for Therapeutic Radiology and Oncology 33rd Annual Meeting Sheraton Washington Hotel November 4-8 1991 Washington, D. C. - [New York etc.] : [Publ. by Pergamon Press], 1991. - [4], 247, [10] s.;30 cm (International Journal of Radiation Oncology Biology, Physics, ISSN 0360-3016 ; vol. 21 suppl. 1)