000 00435nam a2200169Ia 4500
008 131223s9999 xx 000 0 und d
040 _aISI KOLKATA
041 _aEnglish
082 _a510
_bAm512(57)
100 _aLevy Azriel
245 _aHierarchy of formulas in set theory
260 _aN Y
_bAMS
_c1965
440 _aAmerican Mathematical Society: Memoirs; 57
650 _aMathematics
650 _aSet theory
942 _cBK
999 _c62263
_d62263