Fig. 7From: Indian Ocean trade connections: characterization and commercial routes of torpedo jarsComparison of selected biomarker ratios calculated for bitumen samples from a archaeological site under study as Alagankulam (AGM) and Oman (OM) and b from other sites such as Babylonia (BAB) and Judea (JUD) analysed in our lab and from literature on the Dead Sea (DES), Hit, Abu Jir (AJ) [23], Iraq [43]Back to article page