na INLIS000000000031000 20231202150559 231202||||||||| | ||| |||| || | 978-979-505-230-2 010-1223031000 id 622.33 622.33 And s Andi Aladin Sumber daya alam batubara Cet.1 Bandung Lubuk Agung 2011 viii, 232 hlm. : ilus. ; 27 cm R24.29 - R24-0556 Batubara -- Tambang