00325nam a2200121Ia 4500008004100000041001200041082001100053100001800064245009100082260000600173650000600179700001800185221030s9999    xx            000 0 und d  aEnglish  a105.23  aA. E. Clayton 4aThe Performance and Design of Direct Current Machinescby A. E. Clayton, N. N. Hancock  c0  aB  aN. N. Hancock