00741nam0-22002531i-450-990001313860403321000131386FED01000131386(Aleph)000131386FED0100013138620000920d1980----km-y0itay50------baengQuadratic Form Theory Differential EquationsBY GREGORY ,J.New York [etc.]Academic Press1980Mathematics in science and engineeringGregory,John335916ITUNINARICAUNIMARCBK990001313860403321C-26-(1521611MA1MA1Quadratic Form Theory Differential Equations382738UNINAING01