URN:NBN:SI:doc-ESHRLYM11987Strnad, Janezdocuments/doc/E/URN_NBN_SI_doc-ESHRLYM1_001.pdfdocuments/doc/E/URN_NBN_SI_doc-ESHRLYM1_001.txt144articlestr. 194-1990351-66526919257URN:NBN:SI:doc-ESHRLYM1slvDruštvo matematikov, fizikov in astronomov SlovenijePresekInCO naravi svetlobe in o lomu