CRISIS MANAGEMENT STRATEGY OF PUBLIC RELATION PTPN-V RELATED TO COMPANY’S CONFLICT WITH SOCIETY (Study On The Estate Limited Plantation Nusantara V Sei Kencana Garden Tapung Hulu District Of Kampar) - Epiyani Sembiring; Nurjanah (Fakultas Ilmu Sosial dan Ilmu Politik Universitas Riau, 2016)