00254nam a2200109Ia 4500008004100000041001200041082001100053100002200064245004600086260000600132650000600138221030s9999    xx            000 0 und d  aEnglish  a105.23  aS. K. Kulshrestha 0aThermal Engineeringcby S. K. Kulshrestha  c0  aB