This paper addresses the lack of connection between theory and empirics in most export diversification - economic … development studies. We provide a Ricardian-based theoretical explanation of countries' relative export variety as a function of … the level of technology and country size assessed with respect to the rest of the world. Relative export diversification …

and sales compared to more exposed firms. We do not find significant differences for export volumes to the UK or elsewhere …

-diversified export products. In terms of geographical diversification, Poland exploits approximately one-fifth of its theoretical overall … the period analyzed. The Polish export portfolio, in terms of the variety of both its products and receiving markets, is …