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020 _a9789350131480
041 _aENG
080 _aAOT:871 ?
082 _aAOT:871 ?
100 _aMITTAL P C
245 _aCSIR-UGC NET/JRF/SET: General Sciences (Part A)
260 _aUpkar, Agra-2
_c?
650 _aScience
999 _c211981
_d211981