Constitutional Law Cases and Materials 2007 Concise Supplement - University Casebook Author:William Cohen, Jonathan D. Varat, David Vikram Amar This 2007 casebook supplement to both the Concise and Unabridged Cohen, Varat, and Amar's Constitutional Law, Cases and Materials, 12th covers all the major aspects of constitutional law. It features edited cases and original text released since the casebook.