TY - JOUR AU - James Baumgartner TI - Αll $ℵ_1$-dense sets of reals can be isomorphic JO - Fundamenta Mathematicae PY - 1973 SP - 101 EP - 106 VL - 79 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/fm-79-2-101-106/ DO - 10.4064/fm-79-2-101-106 LA - en ID - 10_4064_fm_79_2_101_106 ER -