Regional/National Encyclopaedia:

Libraries all over the world possesses English language encyclopaedias in non-English languages which are rich in information. They should not be overlooked. The national encyclopaedia of a country provides detailed information about history, literature, culture, customs, festivals, geographical details, socio-economic and political conditions etc. of the country.

1. The articles regarding the specific aspect of a country moved with accurate details in foreign, national encyclopaedias are not dealt with in detail in regional general encyclopaedias. 
2. Certain special topics such as biographies of notable persons, historical, topographical, cultural, socio-economic, political conditions of a small country may be either completely omitted or discussed in less detail in general encyclopaedia. Such information is available in detail in national encyclopaedia of the country concerned.