000			00439nam a2200157Ia 4500
001			CATREF082823
008			110518s9999 xx 000 0 und d
041			_aeng
082	0		_a516.5
100	1		_aMassey, William S.
245	1	0	_aAlgebraic topology : _ban introduction
260			_aNew York : _bHrcourt, Brace and World, _c1967.
300			_axix, 261p. ; _c22 cm.
650		4	_aAlgebraic topology
653			_aProof of theorem 5.1
999			_c363381 _d363317