TY - BOOK ID - 6300485 TI - A topological picturebook PY - 1987 SN - 3540964266 9783540964261 PB - Berlin Springer DB - UniCat KW - 515.128 KW - Descriptive set theory of topological spaces KW - 515.128 Descriptive set theory of topological spaces UR - https://www.unicat.be/uniCat?func=search&query=sysid:6300485 AB - ER -