Encyclopaedia Britannica

Britannica Book of the Year : 1992

New Encyclopaedia Britannica : Index, (A-K)

Britanicca Book of the Year 1989 : Britannica world data-annual

New Encyclopaedia Britannica : Index, (L-Z)

The New Encyclopaedia Britannica : Macropaedia : Knowledge in depth. Vol. 13, (Accouting-Architecture)

The New Encyclopaedia Britannica : Macropaedia : Knowledge in depth. Vol. 14, (Arctic-Biosphere)

The New Encyclopaedia Britannica : Macropaedia : Knowledge in depth. Vol. 15, (Birds-Chemical)

The New Encyclopaedia Britannica : Macropaedia : Knowledge in depth. Vol. 16, (Chicago-Death)

The New Encyclopaedia Britannica : Macropaedia : Knowledge in depth. Vol. 17, (Decorative Edison)

The New Encyclopaedia Britannica : Macropaedia : Knowledge in depth. Vol. 18, (Education- Evolution)

The New Encyclopaedia Britannica : Macropaedia : Knowledge in depth. Vol. 19, (Excretion-Geometry)

The New Encyclopaedia Britannica : Macropaedia : Knowledge in depth. Vol. 20, (Geomorphic-Immunity)