00301nam a2200121Ia 4500008004100000040001700041041001200058082001400070100002100084245002500105260003400130300001500164230917s9999||||xx |||||||||||||| ||und||  e197095aMAIN  aEnglish  a514 H873T  aHuggett, Stephen 0aTopological aperitif  aLondonbSpringer-Verlagc2009  aix, 152 p.