000 00367nmm a2200133Ia 4500
008 230201s9999||||xx |||||||||||||||||und||
020 _a9783642653643
100 _aHorst Schubert
245 0 _aCategories
250 _a1972
260 _bSpringer Berlin Heidelberg
_c1972
650 _aMathematics and Statistics
856 _uhttps://doi.org/10.1007/978-3-642-65364-3
999 _c22534
_d22534