na INLIS000000000051252 20210421100258 0010-0421000052 ta 210421 g 0 ind 978-623-228-517-0 551.1/.4:620.92 551.1/.4:620.92 SUB g SUBEKTI, Imam Geologi dan sumberdaya energi / Imam Subekti Cet. 1 Yogyakarta : Graha Ilmu, 2020 xvi, 254 p. : ill. ; 24 cm. GEOLOGY ENERGY RESOURCES Bibl.: p. 249-254 1171/D/2020