312,094 PROCEEDINGS Proceedings of the Contrast Media Research Symposium Cambridge, England July 8-12, 1991 / guest ed. Peter Dawson. - [Philadelpzhia] ; [publ. by J. B. Lippincott Co.], [1991]. [8], 266, [1] s. : il., wykr. , 28 cm ' (A Journal of Clinical and Laboratory Research Investigative Radiology, ISSN 0020-9996 ; vol. 26 suppl. 1)