The Yukpa cultivation system : a study of shifting cultivation in Colombia and Venezuela / Kenneth Ruddle
Land and labour in Latin America : essays on the development of agrarian capitalism in the nineteenth and twentieth centuries / edited by Kenneth Duncan and Ian Rutledge, with the collaboration of Colin Harding
Education for traditional food procurement in the Orinoco delta / by Kenneth Ruddle and Ray Chesterfield
A devassa da devassa : a Inconfidência Mineira : Brasil-Portugal, 1750-1808 / Kenneth R. Maxwell ; traduçao de Joao Maia
Ambiente e sviluppo nel Terzo mondo : il problema delle risorse rinnovabili / Kenneth Ruddle, Walther Manshard ; a cura di Pierpaolo Faggi ; con una presentazione di Giorgio Valussi