532,504 NASOPHARYNGEAL Nasopharyngeal carcinoma: etiology and control.Proceedings of an International Symposium jointy supported by IARC, the National Cancer Institute (USA) and the Japan Society for the Promotion of Science and help in Kyo to, Japan, 4-6 April 1977.Ed. G. de-The, Y. Ito. Lyon 1978 International Agency for Research on Cancer 8°s. XVII, nlb. 1,610, il. WOrld Health Organization IARC Scientific Publiations nr 20