vug-6-sem-hons-dse-3-hist-of-indp-ind-2020.pdf BBMKU Question Paper and solutions BBMKU, BINOD BIHARI MAHTO KOYLANCHAL UNIVERSITY, Dhanbad, Jharkhand बिनोद बिहारी महतो कोयलांचल विश्वविद्यालय, धनबाद, झारखंड bbmkuonline.com