Raven, R. J., & Calvey, H. (Apr-Jun1977). Achievement on a Test of Piaget's Operative Comprehension as a Function of a Process-Oriented Elementary School Science Program. Science Education, 61(2), 159-167.
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Cita Chicago Style (17a ed.)
Raven, Ronald J., y Helen Calvey. "Achievement on a Test of Piaget's Operative Comprehension as a Function of a Process-Oriented Elementary School Science Program."
Science Education 61, no. 2 (Apr-Jun1977): 159-167.
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Cita MLA (9a ed.)
Raven, Ronald J., y Helen Calvey. "Achievement on a Test of Piaget's Operative Comprehension as a Function of a Process-Oriented Elementary School Science Program."
Science Education, vol. 61, no. 2, Apr-Jun1977, pp. 159-167.
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