00737nam0-22002531i-450-990001227950403321000122795FED01000122795(Aleph)000122795FED0100012279520000920d1983----km-y0itay50------baengSymmetric DesignsAn algebraic approachby LANDER E.S.Cambridge [etc.]Cambridge University Press1983.London Mathematical Society lecture note series74Lander,Eric S.56992ITUNINARICAUNIMARCBK990001227950403321C-9-(7421039MA1MA1Symmetric Designs381980UNINAING01