Local land users and officials often have conflicting perceptions of and responses to land degradation issues. This causes problems for officials in diagnosing and addressing the issue and is a major constraint on the successful implementation of policies and projects to address land...

National programmes of hepatitis B virus (HBV) vaccination are recommended by the World Health Organization for all countries. Countries suffering the highest burden of HBV disease are those most needy of universal vaccination, but are frequently of very low income and resources for health care...

A second-generation model of currency crises is combined with a standard model ofbanks as providers of insurance against liquidity risk. In a pegged exchange rateregime, after funds have been committed to the banks, news arrives about the qualityof the banks’ assets and about the exchange rate...