युवक नामक मासिक पत्रिका का प्रकाशन किसने किया था ? - Who published the monthly magazine called Yuvak? - Yuvak Namak Masik Patrika Ka Prakashan Kisne Kiya Tha ? Bihar Gk in hindi, Bihar Modern History Quiz Hajari Laal question answers in hindi pdf SurajNath Chaube questions in hindi, Know About Jagdish Narayann Bihar Gk online test Bihar Gk notes in hindi quiz book Fanindranath