Congo-Kinshasa (2) Development (2) Economic aspects (2) Observations (2) Surveys (2) Observations (2) Economics--Sociological aspects (2) Welfare economics (2) Villages (2) Social problems (2) Seniority, Employee (2) Saving and investment (2) Plantations (2) Livestock (2) Informers (2) Income (2) Impact (2) Human comfort (2) Hoarding of money (2) Hand (2) Forests and forestry (2) Food crops (2) Farmers (2) Expression (2) Banks and banking (2) Agroforestry (2) Acacia (2) Technique (2) Valuation (2) Rating of (2)