युवक पत्रिका का प्रकाशन कब प्रारम्भ हुआ ? - When did the publication of the youth magazine start? - Yuvak Patrika Ka Prakashan Kab Prarambh Hua ? Bihar Gk in hindi, Art and Culture 1992 Ee. Me question answers in hindi pdf 1987 Ee. Me questions in hindi, Know About 1920 Ee. Me Bihar Gk online test Bihar Gk notes in hindi quiz book 1989 Ee. Me