BEGIN:VCALENDAR VERSION:2.0 PRODID:-//hacksw/handcal//NONSGML v1.0//EN TZ:+00 BEGIN:VEVENT DTSTART:20210525T000000Z DTEND:20210525T000000Z SUMMARY:"Nanotechnologies and Nanomaterials" NANO-2021: Poster abstract deadline due before 25th May 2021 LOCATION:Institute of Physics NASU,L'viv,Ukraine END:VEVENT END:VCALENDAR