Apriyanto, Bejo, 		Nurdin, Elan, 		Ikhsan, Fahrudi, AND 		Kurnianto, Fahmi.
" APPLICATION OF DISCOVERY LEARNING TO INCREASE ACTIVITY AND STUDENT LEARNING RESULTS IN UNDERSTANDING THE LIFE ENVIRONMENT IN SMP NEGERI 2 SUKODONO" <em>Geosfera Indonesia</em> [Online], Volume 1 Number 1 (14 December 2017)