बिहार के तुगलक काल के सर्वाधिक महत्वपूर्ण प्रशासक मलिक इब्राहिम या मलिक बया का मकबरा है - The tomb of Malik Ibrahim or Malik Baya, the most important administrator of the Tughlaq period of Bihar - Bihar Ke Tugalak Kaal Ke Sarwaadhik Mahatvapurnn Prashasak Malik Ibrahim Ya Malik Baya Ka Makbara Hai Bihar Gk in hindi, Bihar Medieval History Quiz Bihar Shareef Me question answers in hindi pdf Patana Me questions in hindi, Know About Delhi Me Bihar Gk online test Bihar Gk notes in hindi quiz book Darbhanga Me