Fungsi community development PT Freeport Indonesia: analisis fungsionalisme struktural robert K. Merton terhadap implementasi community development oleh lembaga pengembangan masyarakat amungme dan kamoro (LPMAK) di Wilayah Kokonao Distrik Mimika Barat = The function of pt freeport indonesia s community development an analysis of robert k merton s structural functionalism towards the implementation of community development by lembaga pengembangan masyarakat amungme dan Kamoro (LPMAK) in Kokonao Villa / Yusdam Arrang Bua