An encyclopedia or encyclopaedia (also spelled encyclopædia, see spelling differences) is a type of reference work or compendium holding a comprehensive summary of information from either all branches of knowledge or a particular branch of knowledge.
A hardcover, hardback, or hardbound book is one bound with rigid protective covers (typically of cardboard covered with buckram or other cloth, heavy paper, or occasionally leather).
A reference work is a book or periodical (or its electronic equivalent) to which one can refer for confirmed facts.
Vietnam, officially the Socialist Republic of Vietnam (SRV), is the easternmost country on the Indochina Peninsula in Southeast Asia.
The Vietnamese alphabet (chữ Quốc ngữ; literally national language script) is the modern writing system for the Vietnamese language.
Vietnamese encyclopedias are encyclopedias which are written in Vietnamese or are focused on Vietnam-related topics.
Vietnamese (tiếng Việt) is an Austroasiatic language that originated in the north of Vietnam and is the national and official language of the country.
Encyclopedia of Vietnam, Từ dien Bach khoa Viet Nam, Từ dien Bach khoa toan thu Viet Nam, Từ điển Bách khoa Toàn thư Việt Nam, Từ điển Bách khoa Việt Nam, Từ điển Bách khoa toàn thư Việt Nam, Từ điển bách khoa toàn thư Việt Nam.