Ross, A. R., & Lewin, K. (1992). Science kits in developing countries: An appraisal of potential. International Institute for Educational Planning.
Citace podle Chicago (17th ed.)Ross, Angus R., a Keith Lewin. Science Kits in Developing Countries: An Appraisal of Potential. Paris: International Institute for Educational Planning, 1992.
Citace podle MLA (9th ed.)Ross, Angus R., a Keith Lewin. Science Kits in Developing Countries: An Appraisal of Potential. International Institute for Educational Planning, 1992.
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