00301nam a2200109Ia 4500008004000000082001600040100002200056245005100078260003000129300001300159650001900172210210b1965   xxu||||| |||| 00| 0 eng d  a512.02 BURI  aBURTON (David M).  aIntroduction to abstract mathematical systems.  aUSAbAddison-Wesleyc1965  aviii,120  aAbstract maths