00321nam a2200121Ia 4500008004100000041001200041082001600053100001600069245005100085260004800136300000800184650000700192221030s9999    xx            000 0 und d  aEnglish  a105.23bAat  aV. K. Aatre 0aNetwork Theory & Filter Designcby V. K. Aatre  bNew Age International Pub.aNew Delhic1980  a476  aEE