00320nam a22000857a 4500008004100000040005500041100001500096245005400111260006900165230630b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  6Peteu, GH.  aRadioactivitatea aplicata in industria petroliera  bEditura academiei republicil socia;iste romaniaaBucurestic1971