00244nam a2200109Ia 4500008004100000041001200041082001100053100001600064245004200080260000600122650000600128221030s9999    xx            000 0 und d  aEnglish  a105.23  aM. S. Berde 0aThyristor Engineeringcby M. S. Berde  c0  aB