books.google.co.uk - "Consisting of four principle sections, The Tribesmen, The Aristocrats, The Amateurs, and The Professionals, this study looks holistically at the variety of ways that polo influences and is influenced by the peoples that participate in it. One hundred historic and modern photographs are included"--Provided...http://books.google.co.uk/books/about/The_Evolution_of_Polo.html?id=9i-bgOjaVysC&utm_source=gb-gplus-shareThe Evolution of Polo
