HMT ITB : Yudha Bumi Presents
“ČERVENÁ One Year Journey ofx The Blazing Fire” https://issuu.com/yudhabumi/docs/buku_akhir_tahun__upload_ … “MINERIA 7th Edition: New Era of Mining” https://issuu.com/yudhabumi/docs/mineria7th_edisi … “Kamar Gelap Yudha Bumi” https://issuu.com/yudhabumi/docs/kamargelap2019yb …