192,438 BROWN F. /red./ Symposium Comparative Virology. Ed. by P. Brown /i in./.Held by the Society For General Microbiology Virus Group at the Middlesex Hospital Medical School on 3 and 4 January 1973. London 1973 Cambridge University Press, For the Society for General Microbiology 4° s. nib.2, 130, ilustr. The Journal of General Virology vol.20, suppl.