TY - BOOK ID - 133539933 TI - Non-Euclidean geometry PY - 1968 VL - 2 PB - [Toronto] : University of Toronto Press, DB - UniCat KW - Geometry, Non-Euclidean KW - Géométrie non-euclidienne UR - https://www.unicat.be/uniCat?func=search&query=sysid:133539933 AB - ER -