TA Engineering (General). Civil engineering (General) 41 TP Chemical technology 29 Municipal refuse. Solid wastes 15 TD Environmental technology. Sanitary engineering 15 HD1394-1394.5 Real estate management 10 TK Electrical engineering. Electronics Nuclear engineering 9 HD28 Management. Industrial Management 8 TH1-9745 Building construction 8 Malaysia 7 TH Building construction 7 H Social Sciences (General) 6 Enviromental management 5 NA Architecture 5 QA75 Electronic computers. Computer science 5 T Technology (General) 5 TJ Mechanical engineering and machinery 5 Environmental protection 4 GE Environmental Sciences 4 Q Science (General) 4 HD Industries. Land use. Labor 3 QA Mathematics 3 QD Chemistry 3 Unspecified 3 Agricultural wastes 2 Case study 2 Composite materials 2 Construction industry 2 Consumer behavior. Consumers' preferences. Consumer research. Including consumer profiling 2 Environmental policy and economic development. Sustainable development. Environmental management 2 Environmental pollution 2