Union Minister Dr Jitendra Singh, flanked by Vice Chief of Staff Lt. Gen. Devraj Anbu, DG BRO Lt. Gen. Harpal Singh, E-in-C Lt. Gen. S.K. Srivastava and other dignitaries, releasing the BRO Book, at the inaugural session of 2-day International Seminar on Bridges & Tunnels, at New Delhi on Thursday.