00333nam a2200133Ia 4500008004100000082001800041100002000059245001900079260004500098300000800143650001200151650001800163653001800181170901s1975    xx            000 0 und d  a539.752bB20R  aBanerjee, S. P. 0aRadio Activity  aBhopalbM. P. Hindi Granth Academyc1975  a136  aPhysics  aPure Sciences  aRadioactivity