MEDIEVAL TRADE AND INDUSTRY  - General Bibliography 
 24 EUROPE AND THE OUTSIDE WORLD                                
- Hart, H. (), Marco Polo, Venetian Adventurer.
 - Hart, H.H. (), Sea Road to the Indies.
 - Kimble G.H.T. (1938), Geography in the Middle Ages.
 - Parry, J.H. (), The Age of Reconnaissance.
 - Parry, J.H. (), Europe and the Wider World.
 - Penrose, B. (1967), Travel and Discovery in the Renaissance 1420-1620.
 - Phillips, J.K.S. (1988), The Medieval Expansion of Europe.
 - Prestage, E. (), The Portuguese Pioneers.
 - Renault, G. (), The Caravels of Christ.
 - Scamell, G.V. (1981), The World Encompassed.
 - Scamell, G.V. (1989), The First Imperial Age: European Overseas Expansion 1400-1715.
 - Smith A.K. (1992), Creating a World Economy 1400-1825
 - Yule, H. (), The Travels of Marco Polo.