Pencemaran Akibat Pembangunan PLTPB di Gunung Slamet
Coba berandai-andai, bila terjadi kekeringan sebab sumber-sumber air hilang. Lalu berandai-andai, bila sumber listrik hilang.Mana yang akan berd
A tradable good or service can be sold in another location distant from where it was produced. A good that is not tradable is called non-tradable.
