000			00349nam a2200145Ia 4500
008			230627s9999 xx 000 0 und d
050			_aPAM QTO QA251.O67
245		0	_aOperations and morphisms
260			_bThe Open University
260			_c1970
300			_axi,41p.
300			_bill.
300			_c30cm.
650			_aMorphisms (Mathematics)
999			_c124313 _d124313