00280nam a2200133Ia 4500020000900000082000800009100002500017245003200042250000600074260003600080300000800116500000600124650001600130  aNULL  a510  aBrumfiel, F. Charles 0aIntroduction To Mathematics  a-  aCanadabAddision Wesley Longman  a322  a0  aMathematics