00309nam a2200121Ia 4500008004100000041001200041082001100053100002000064245007600084260000600160650000600166700001500172221030s9999    xx            000 0 und d  aEnglish  a105.23  aB. Ravindernath 0aPower System Protection and Switchgearcby B. Ravindernath , M. Chander  c0  aB  aM. Chander