00704nam0-22002651i-450-990001270250403321000127025FED01000127025(Aleph)000127025FED0100012702520000920d1971----km-y0itay50------baengCombinatorial methodsby PercusNew York [etc.]Springer-Verlag197 1Applied mathematical sciencesPercus,Jerome K.49778ITUNINARICAUNIMARCBK990001270250403321C-33-(411953MA1MA1Combinatorial methods168087UNINAING01