storage of wastes wastes 20 waste disposal services 20 recycling of wastes 16 dumps 10 house-hold wastes 7 environment protection 5 more ... industrial wastes 5 waste incinerators 5 environmental pollution 4 ecology 3 carbon dioxide 3 legal regulations 3 specialized dumping grounds 3 controlled dumping grounds 3 biological wastes 2 biofuels 2 workings 2 power engineering 2 handling of hazardous substances 2 molecular theory of liquids 2 monitoring 2 unconventional energy sources 2 landscape recultivation 2 simulation and modelling 2 skladování plynů 2 toxic waste 2 sorting 2 exploitation 2 health harmful substances 2 less ...