00322nam a2200121Ia 4500008004100000082001000041082001000051100002200061245005900083260001100142260003800153260000900191230118s9999||||xx |||||||||||||| ||und||  a621.8  bCLA/T  aalbert ebclayton 4athe performance and design of direct current machines   alondon  bthe english language book society  c1959