000 00445nam a2200145Ia 4500
008 220718s1972||||xx |||||||||||||| ||und||
082 _a13.06+7.04
_bPENR
100 1 _aPenrose, R
245 1 _aTechniques of differential topology in relativity
_cR. Penrose
260 _aPhiladelphia
_bSIAM
_c1972
300 _aviii
_e72
490 _aCBMS-NSF regional conference series in applied mathematic 7
690 _aDifferential Topology
942 _cBK
999 _c14436
_d14436