Showing results 5661 to 5680 of 8110
- problem of resources 1
- problem of sewage 1
- problem of spiritual 1
- problem of survival on Earth 1
- problem of the axiomatic approach 1
- problem of the development of market possibilities 1
- problem of the financial system 1
- problem of the investment of innovations 1
- problem of the research 1
- problem of the subjects of the innovation process 1
- problem of traffic jams 1
- problem of translation 1
- problem of unemployment 1
- problem of waste 1
- problem payables 1
- problem reality 1
- problem situation 2
- problem solving 1
- problem space 1
- problem studies 2