00874nam0-22003251i-450-9900025799204033210442205902000257992FED01000257992(Aleph)000257992FED0100025799220000920d1989----km-y0itay50------baENG<<The >>VNR Concise Encyclopedia of MathematicsEdited by W. Gellert [et al.. .].New YorkVan Nostrand Reinhold1989.776 p.24 cmOpereTrattatiRaccolteEnciclopedie510Gellert,W.ITUNINARICAUNIMARCBK990002579920403321MXXIX-A-4221208MASMASVNR Concise Encyclopedia of Mathematics436166UNINAING01