: Features comprehensive presentation transcripts and slides for the 11th Edition , specifically covering The Law of Comparative Advantage and classical trade theories. : Provides curated lecture notes and PPT summaries for the 13th Edition , including Chapter 1: Key Concepts and detailed analysis of tariffs and balance of payments. Queen's Economics Department Specialized Chapter Content on Slide-Sharing Sites

These sources provide direct downloads of chapter-by-chapter slides based on various editions of the textbook: Queen’s University (QED)