(1961). Charles Babbage on the principles and development of the calculator: And other seminal writings. New York: Dover Publications.
Παραπομπή Chicago StyleCharles Babbage On the Principles and Development of the Calculator: And Other Seminal Writings. New York: Dover Publications, 1961.
Παραπομπή MLACharles Babbage On the Principles and Development of the Calculator: And Other Seminal Writings. New York: Dover Publications, 1961.
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