@book{198786,
	author = {KIM Seok-Ho and Retno Dwi R.},
	title = {3 Menit Belajar Pengetahuan Umum : Alam Semesta, Bumi, Samudra},
	publisher = {Bhuana Ilmu Populer},
	year = {2006},
	address = {Jakarta}
}