Pengarang: William Benton

Encyclopedia Britannica Macropedia Knowledge in Depth 13 : Newman - Peisitratus

Encyclopedia Britannica Macropedia Knowledge in Depth 14 : Peking - Probability

Encyclopedia Britannica Macropedia Knowledge in Depth 15: Proboscidea - Rubber

Encyclopaedia Britannica: Ready Reference and Index - X Tirane Zywny

Encyclopedia Britannica Macropedia Knowledge in Depth 16 : Rubena - Somalia

Encyclopaedia Britannica: Ready Reference and Index - IX Scurlock Tirah

Encyclopaedia Britannica: Ready Reference and Index - VIII Piranha Scurfy

Encyclopedia Britannica Macropedia Knowledge in Depth 17 : Sonar - Tax Law

Encyclopaedia Britannica: Ready Reference and Index - VII Montpel Piranesi

Encyclopaedia Britannica: Ready Reference and Index - VI Lalo Montpar