On a problem of G. T. Whyburn

Instytut Matematyczny Polskiej Akademii Nauk / Institute of Mathematics / Publishing house / Journals and Serials / Fundamenta Mathematicae / All issues

J. Roberts, J. Dorroh Fundamenta Mathematicae 13 (1929), 58-61 DOI: 10.4064/fm-13-1-58-61