The Algebra of Topology

@article{algebratopology-annalsmath45,
   apice = {AlgebratopologyAnnalsmath45},
   author = {John Charles Chenoweth McKinsey and Alfred Tarski},
   journal = {Annals of Mathematics},
   numpages = 51,
   pages = {141--191},
   title = {The Algebra of Topology},
   volume = 45,
   year = 1944
}