000 00432nam a2200157Ia 4500
008 131223s9999 xx 000 0 und d
040 _aISI KOLKATA
041 _aEnglish
082 _a510.7
_bOs82
100 _aVaananen Jouko
245 _aExtention and half numbers
260 _aOslo
_bUniversity
_c1978
440 _aOslo University.Institute of mathematics preprint series : 1978, 11
650 _aMathematics
942 _cBK
999 _c81852
_d81852