R. B., M. o. A. (1649). Arithmetick symbolical: In one book : in which the mystery of numeration by symbols is revealed. Printed for A. Crook ....
Παραπομπή σε μορφή Chicago (17η εκδ.)R. B., Mr. of Arts. Arithmetick Symbolical: In One Book : In Which the Mystery of Numeration by Symbols Is Revealed. London: Printed for A. Crook ..., 1649.
Παραπομπή σε μορφή MLA (8th εκδ.)R. B., Mr. of Arts. Arithmetick Symbolical: In One Book : In Which the Mystery of Numeration by Symbols Is Revealed. Printed for A. Crook ..., 1649.
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