Krulik, S. (1971). A handbook of aids for teaching junior-senior high school mathematics. Saunders.
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Chicago-čujuhus (17. p.)
Krulik, Stephen. A Handbook of Aids for Teaching Junior-senior High School Mathematics. Philadelphia: Saunders, 1971.
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MLA-čujuhus (9. p.)
Krulik, Stephen. A Handbook of Aids for Teaching Junior-senior High School Mathematics. Saunders, 1971.
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