Tolman, M. N., & Hardy, G. R. (1995). Discovering elementary science: Method, content, and problem-solving activities. Allyn and Bacon.
Cita Chicago Style (17a ed.)Tolman, Marvin N., y Garry R. Hardy. Discovering Elementary Science: Method, Content, and Problem-solving Activities. Boston: Allyn and Bacon, 1995.
Cita MLA (9a ed.)Tolman, Marvin N., y Garry R. Hardy. Discovering Elementary Science: Method, Content, and Problem-solving Activities. Allyn and Bacon, 1995.
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