Victor, E. (1989). Science for the elementary school (6th ed.). Macmillan.
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Chicago-čujuhus (17. p.)
Victor, Edward. Science for the Elementary School. 6th ed. New York: Macmillan, 1989.
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MLA-čujuhus (9. p.)
Victor, Edward. Science for the Elementary School. 6th ed. Macmillan, 1989.
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