बिहार समान्य ज्ञान (Bihar GK) Posted on October 12, 2018 by bpscnotes 5 comments Download here 👉Drainage system in Bihar Like our Facebook Page to stay updated-BPSC Notes FB Page Share this:FacebookWhatsAppPrintTelegramMoreEmailLike this:Like Loading... Related tagged with bihar, Mains, Prelims bihar Mains Prelims