Údar: Encyclopaedia Britannica, inc
- The New Encyclopdia Britannica : the index L-Z /
- The New Encyclopdia Britannica vol. 32 : guide to the Britannica /
- The New Encyclopdia Britannica vol. 29 : united zoroastrianism /
- The New Encyclopdia Britannica vol. 26 : pre-columbian sacred /
- The New Encyclopdia Britannica vol. 24 : metaphysics Norway /
- The New Encyclopndia Britannica : the index /