Principal component (PC) analysis of R5-8, R30 and R31 lineages in Indian populations. Munda group and a few Indo-European/Dravidian populations collected from Bihar, Jharkhand and Chhattisgarh states, predominantly cluster with haplogroup R7. Haplogroup frequencies were obtained from published sources  and our unpublished data.
Chaubey et al. BMC Evolutionary Biology 2008 8:227 doi:10.1186/1471-2148-8-227