PETTOFREZZO, A. J. (1969). Number systems ; structure and: Properties. Scott, Foresman.
Chicago-čujuhus (17. p.)PETTOFREZZO, Anthony J. Number Systems ; Structure and: Properties. Glenview, Ill: Scott, Foresman, 1969.
MLA-čujuhus (9. p.)PETTOFREZZO, Anthony J. Number Systems ; Structure and: Properties. Scott, Foresman, 1969.
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