The Penguin concise Columbia encyclopedia /
The World Book encyclopedia. Volume 12., L.
The World Book encyclopedia. Volume 1., A.
The encyclopedia of democracy. Volume 1., A-C. /
The encyclopedia of democracy Volume III, L-R
The encyclopedia of democracy Volume IV, S-Z
Encyclopedia of nationalism. Volume 1., Fundamental themes. /
Encyclopedia of nationalism. Volume 2., Leaders, movements, and concepts. /
The encyclopedia of democracy. Volume 2., D-K. /
Encyclopedia of acoustics. Volume 1., General linear acoustics. Nonlinear acoustics and cavitation. Aroacoustics and atmospheric sound... /
Encyclopedia of acoustics. Volume 2., Ultrasonics, quantum acoustics, and physical effects of sound. Mechanical vibrations and shock... /
Encyclopedia of acoustics. Volume 3., Architectural acoustics. Acoustical signal processing. Physiological acoustics. Psychological acoustics. /
Encyclopedia of acoustics. Volume 4., Speech communication. Music and musical acoustics. Bioacoustics. Animal bioacoustics... /
Encyclopedia of terrorism. /
Encyclopedia of software engineering. /
The World Book encyclopedia. : Volume 1. A.
The Glasgow encyclopedia. /
The Cambridge encyclopedia of Australia. /
The Cambridge encyclopedia of Japan. /
The Penguin encyclopedia. /