00305nam a2200121Ia 4500008004100000041001200041082001600053100001500069245003900084260003800123300001000161650001200171221030s9999    xx            000 0 und d  aEnglish  a105.23bGau  aR. K. Gaur 0aEngineering Physicscby R. K. Gaur  bDhanpat Rai Pub.aNew Delhic2002  a64.20  aPhysics