1
by LaJoy, Millard H.
Scranton, Pa. : International Textbook Co., 1950
Scranton, Pa. : International Textbook Co., 1950
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Book
2
by LaJoy, Millard H. (Millard Hartley), 1913-
Pittsburgh, PA : Instruments Publishing Co., 1956
Pittsburgh, PA : Instruments Publishing Co., 1956
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Book