books.google.co.uk - This book is about the present characteristics and distribution of the major agricultural systems of the world - shifting cultivation, wet rice cultivation, pastoral nomadism, Mediterranean agriculture, mixed farming, dairying, plantations, ranching and large-scale grain production. In Part One some...http://books.google.co.uk/books/about/The_Agricultural_Systems_of_the_World.html?id=16-ejysyRCgC&q=crops&utm_source=gb-gplus-shareThe Agricultural Systems of the World
