Amijaya, H. and Pameco, P.A. 2017. Geochemistry of Natural Gas Seepages in Boto Area, Bancak, Semarang, Central Java. Indonesian Journal on Geoscience. 4, 2 (Mar. 2017), 61–70. DOI:https://doi.org/10.17014/ijog.4.2.61-70.