Mateo, S. G. (1987). Values clarification lessons in high school chemistry: Development, tryouts and evaluation. s.n.
Citace podle Chicago (17th ed.)Mateo, Shirley Garcia. Values Clarification Lessons in High School Chemistry: Development, Tryouts and Evaluation. s.l: s.n, 1987.
Citace podle MLA (9th ed.)Mateo, Shirley Garcia. Values Clarification Lessons in High School Chemistry: Development, Tryouts and Evaluation. s.n, 1987.
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