Penelitian Operasional http://repository.unigal.ac.id:8080/handle/123456789/4030 Thu, 10 Sep 2026 10:39:56 GMT 2026-09-10T10:39:56Z Penelitian Operasional http://repository.unigal.ac.id:80/bitstream/id/dc7c306a-4448-4005-89ce-048fd5c3ec5b/ http://repository.unigal.ac.id:8080/handle/123456789/4030