26 November 2016

POTENSI PANAS BUMI (GOETHERMAL) DAN TENAGA AIR (HYDRO POWER) PROPINSI SUMATERA UTARA

POTENSI PANAS  BUMI  (GOETHERMAL) PROPINSI SUMATERA UTARA


POTENSI  TENAGA AIR   (HYDRO POWER) PROPINSI SUMATERA UTARA

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