GEMMEL, C. M. (1968). Modern mathematics: Cliffs keynote reviews. Cliff's Notes.
Chicago-čujuhus (17. p.)GEMMEL, Charlotte M. Modern Mathematics: Cliffs Keynote Reviews. Nebraska: Cliff's Notes, 1968.
MLA-čujuhus (9. p.)GEMMEL, Charlotte M. Modern Mathematics: Cliffs Keynote Reviews. Cliff's Notes, 1968.
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