532,941 POLYCHRONAKOS D.J. /red./ Proceedings of the 11th Hellenic Ophthal— mological Congress. Tumours of the Eyeball Eessandra—Halkidiki June 16—18, 1978. Org. by the Ophthalmological Society cf Northern Greece. Ed. by D. J. Polychronakos. Thessaloniki 1978 Printed by M Trianta— fyllou Sons 8 s. 445, nlb. 2, il, /2- ga k. tyt. w jęz grec. tekst częsc. w jęz. grec., niem.,fr./