00327nam a2200121Ia 4500008004100000041001200041082001600053100002200069245005600091260003100147300000800178650001900186221030s9999    xx            000 0 und d  aEnglish  a105.23bBal  aN. P. Bali ( PR ) 0aDifferential Equations ( PR )cby N. P. Bali ( PR )  bLaxmi PubaNew Delhic1999  a491  aBE Mathematics