অনুরূপ উপাদানগুলি: The Americana :
- The Encyclopedia Americana : The International Reference Work : Complete in Thirty Volumes /
- The Encyclopedia Americana : The International Reference Work : Complete in Thirty Volumes /
- The Encyclopædia Britannica : A Dictionary of Arts, Sciences and General Literature /
- Dictionnaire des dictionnaires : lettres, science, arts, encyclopédie universelle /
- The Americana Annual 1950 : An Encyclopedia of the Events of 1949 /
- The Americana Annual 1958 : An Encyclopedia of the Events of 1957 /