ECOCULTURAL REVITALIZATION OF NORTH SUMATERA THROUGH THE IMPLEMENTATION-CONSTRUCTIVE APPROACHING POETRY OF STUDENTS SMK SWASTA 4 UMN AL-WASHLIYAH IN 2018-2019 ACADEMIC YEAR - Alkausar Saragih, Rosmawati Harahap, (PROSIDING SEMINAR NASIONAL HASIL PENELITIAN, 2019)