Prosiding Semnas UGM 2018 http://repository.unigal.ac.id:8080/handle/123456789/2085 Sat, 25 Apr 2026 06:25:12 GMT 2026-04-25T06:25:12Z Prosiding Semnas UGM 2018 http://repository.unigal.ac.id:80/bitstream/id/b1181081-5050-4b4f-be65-12f83088e705/ http://repository.unigal.ac.id:8080/handle/123456789/2085