The GAO title, Principles of Federal Appropriations Law, Second Edition is available from the General Accounting Office. It as also known as the "Red Book".

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• Principles of Federal Appropriations Law: Volume I
• Principles of Federal Appropriations Law: Volume II
• Principles of Federal Appropriations Law: Volume III
• Principles of Federal Appropriations Law: Volume IV
• Principles of Federal Appropriations Law: Volume V