Factory and trade waste 15 Agronomy 12 Economics 8 Management 8 Experimental research 7 Refuse and refuse disposal 7 Soil Science and Agricultural Chemistry 7 latin square design 7 Statistics 6 Social sciences 5 factorial experiments 5 Agriculture 4 Bioremediation 4 Conflict-- Development of Industry-- Factories 4 Environmental aspects 4 Factories act 4 Factory 4 Factory and trade waste-Management 4 Factory management 4 Research 4 Biotechnology 3 Commerce 3 Design of Experiments 3 Factorial analysis 3 Factorial experiments 3 Fermentation 3 Human behavior 3 Industrial Microbiology 3 Industrial economics 3 Industries 3