Bowman, M. L., & Coon, H. L. (1978). Recycling: Activities for the classroom. ERIC Clearinghouse for Science, Mathematics.
Citace podle Chicago (17th ed.)Bowman, Mary Lynne, a Herbert L. Coon. Recycling: Activities for the Classroom. Columbus: ERIC Clearinghouse for Science, Mathematics, 1978.
Citace podle MLA (9th ed.)Bowman, Mary Lynne, a Herbert L. Coon. Recycling: Activities for the Classroom. ERIC Clearinghouse for Science, Mathematics, 1978.
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