000 00445nam a2200145Ia 4500
001 15272
008 170722s9999 xx 000 0 und d
110 _aOpen University, Linear Mathematics Course Team
245 _aWave equation, orthogonal and symmetric transformations. Units 23 and 24 /
260 _bOpen uty press ,
_c1972.
300 _a51 p.
_c29.5cms
653 _aLinear Differential Equation
653 _aMathematics
942 _cGEN
999 _c95004
_d95004