New encyclopaedia Britannica
- 15th ed.
- Chicago Encyclopaedia Britannica 1984
Vol. 1 (A-ak-Bayes)
085229591X
Encyclopaedia-Britannica
030 / NEW/19994
Vol. 1 (A-ak-Bayes)
085229591X
Encyclopaedia-Britannica
030 / NEW/19994