Moses Greeley Parker Memorial Library (Dracut)
609.2
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609.2
Code
609.2
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Marvelous Mattie, how Margaret E. Knight became an inventor, Emily Arnold McCully
Garrett Morgan, inventor of the traffic light and gas mask, Patricia J. Murphy
Eli Whitney, Ann Gaines
Microwave man, Percy Spencer and his sizzling invention, Sara L. Latta
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