University of London. Chelsea College. Centre for Science Education. conservation Education Project & Kelly, P. (1975). People and resources. Evans Brothers.
Citace podle Chicago (17th ed.)University of London. Chelsea College. Centre for Science Education. conservation Education Project a Peter Kelly. People and Resources. London: Evans Brothers, 1975.
Citace podle MLA (9th ed.)University of London. Chelsea College. Centre for Science Education. conservation Education Project a Peter Kelly. People and Resources. Evans Brothers, 1975.
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