Subjek: Ensiklopedia

Encyclopaedia Britannica: Ready Reference and Index - VIII Piranha Scurfy

McGraw-Hill Encyclopedia Of Science and Technology 5: ENT-FUS

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

Encyclopaedia Britannica: Ready Reference and Index - VII Montpel Piranesi

Encyclopedia Britannica Macropedia Knowledge in Depth 18 : Taylor - Utah

McGraw-Hill Encyclopedia Of Science and Technology 3: CHA CYT

Encyclopaedia Britannica: Ready Reference and Index - VI Lalo Montpar

Encyclopaedia Britannica: Ready Reference and Index - V Hermoup Lally

Encyclopaedia Britannica: Ready Reference and Index - IV Excom Hermosil

Encyclopedia Britannica Propaedia Outline of Knowledge