The following link to a webpage maintained by Professor Marius Brulhart (Lausanne) provides an excellent link for those interested in the broader "international trade" and "spatial economics" literature. I begin teaching a related course tomorrow.
Whilst we have worked on the boundary between trade and the environment there are issues covered in this excellent list of papers (with download links for some papers) that provide food for thought. I believe a couple of my own papers sneak in here as well.
The link has also been placed in the "education" sidebar. Papers are listed under the following topics: Where is the trade and environment policy category we ask?
International Trade, Geography and Specialisation: Empirical Evidence
1.1 Theory: From Ricardo to Krugman
1.2 Empirics: Overview
2. DESCRIPTIVES: SPECIALISATION AND TRADE VOLUMES
2.1 Trade Structures
2.2 Sectoral Specialisation / Geographic Concentration
2.3 Geographical Clustering of Firms
2.4 The Gravity Model and Border Effects
3. ANALYTICAL EMPIRICS: TESTING THEORIES
3.1 Regressing Specialisation on its Determinants
3.2 Testing Neoclassical Trade Theory: Leontief, Etc.
3.3 Testing the "New" Trade Theory: The Home-Market Effect, Etc.
4. POLICY-RELATED ISSUES
4.1 Trade and Wages
4.2 Geography, Agglomeration and Regional Inequality
4.3 Trade and Factor-Market Adjustment