Theory and Practice of Harmonization of Rules on Regional and Multilateral Bases: Its Relevance for World Trade Organization Work on Trade Facilitation - Journal of World Trade View Theory and Practice of Harmonization of Rules on Regional and Multilateral Bases: Its Relevance for World Trade Organization Work on Trade Facilitation by - Journal of World Trade Theory and Practice of Harmonization of Rules on Regional and Multilateral Bases: Its Relevance for World Trade Organization Work on Trade Facilitation 36 4 Journal of World Trade