ए.के. राय के नेतृत्व में मार्क्सवादी कोर्डिनेशन कमेटी द्वारा अलग झारखण्ड की मांग कब की गई ? - A.k. When was the demand for separate Jharkhand by the Marxist Coordination Committee led by Rai? - A.Ke. Raay Ke Netritv Me Markswadi Coordination Commette Dwara Alag Jharkhand Ki Mang Kab Ki Gayi ? Jharkhand Gk in hindi, इतिहास 1978 Me question answers in hindi pdf 1975 Me questions in hindi, Know About 1971 Me Jharkhand Gk online test Jharkhand Gk notes in hindi quiz book 1974 Me