aspectpolitique athletes canada china) cityplanning développementdurable ecology environmentalaspects environmentalconditions general histoire history juvenileliterature olympicgames olympicgames(22nd:1980:moscow olympicgames(29th:2008:beijing olympics politicalaspects politicalaspectsofolympics politicalscience politiquegouvernementale pollution russia) sportifs sports sportsandstate sustainabledevelopment