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bongkar 4dBongkar Kecik is on . Join to connect with Bongkar Kecik and others you may know. gives people the power to share and makes the world more openTahapan dari model 4D terdiri dari 4 tahap yaitu: (1) Pendefinisian (define); (2) Perancangan (desn); (3) Pengembangan (developmen); (4) Penyebaran (disseminate).