A national emblem is a symbol that represents a nation. It may or may not appear on the national flag. It is usually something from the natural world, eg. an animal or bird, but can be any object.
The official national emblems of nations of the world in alphabetical order :
... work which
has given Thomas à Kempis universal fame in the
Western churches is the De imitatione Christi. It
is the pearl of all the writings of the mystical ...