TY - GEN ED - European conference on optical communication ( 6th : 16-19 September 1980;University of York) ED - TI - Sixth european conference on optical communication : conference held in University of York, U K 16-19 September 1980 U1 - 621.38275 PY - 1980/// CY - London PB - The istitution of electrical engineers KW - Fabrication KW - Fibers optics KW - Optical fibers ER -