The International Development Association, the World Bank affiliate for concessionary lending, has approved loans totaling $91.3 million to help finance projects in four developing countries:

*A $73.4 million project in Mali to upgrade the country's roads and strengthen institutions in charge of rehabilitating its highways. IDA will support the project with a $48.6 million loan. Additional funding will come from the government and the African Development Fund.

*A program in Ghana to improve the reliability of the electricity supply to industry. The project, which will be supported by a loan from IDA of $28 million, will finance the rehabilitation of the generating and distribution facilities of the country's two major power suppliers. Italy and Britain also will help finance the project.

*A $20.2 million project to boost agricultural productivity in Malawi. The project is designed to help the country's agriculture ministry improve extension programs and provide field support. In addition to the IDA's $11.6 million loan, the government of Malawi and the U.S. Agency for International Development will provide financing.

*A $4.1 million project to study the cost of rehabilitating an oil pipeline in Zambia, which runs from a port in Tanzania to a refinery in central Zambia. IDA has agreed to lend $3.1 million to help finance the survey, in addition to funds from the European Investment Bank.

In other developments, the World Bank recently agreed to support international development projects including:

*A project to improve health services in Ivory Coast by strengthening management of the country's health ministry and training more nurses. The project includes assisting the country's economic ministry in developing a program of demographic data collection and analysis. The World Bank will lend $22.2 million for the project. Additional funding will come from the U.S. Agency for International Development.

* A $31.3 million project to increase agricultural exports from Papua New Guinea. The World Bank will lend $18.8 million for the project.