Research, Teaching, and Learning With the Piaget Model
John Wilson Renner
Principles of Mathematics. Second Edition
Carl Barnett Allendoerfer & Carl Barnett Allendoerfer (and Oakley (cletus Odia)) & Cletus Odia Oakley
A Transition to Abstract Mathematics: Learning Mathematical ...
Randall Maddox
Nightfall
Isaac Asimov & Robert Silverberg
Making Data Visual: A Practical Guide to using Visualization ...
Danyel Fisher & Miriah Meyer
English - Kanuri Dictionary
Norbert Cyffer