Taken from the Drug Policy Alliance- Library: http://www.lindesmith.org/library/prehenm.html
Formerly the Lindesmith Center and the Drug Policy Foundation

Henman, Anthony Richard: "Coca: an Alternative to Cocaine?", Drug Policy 1989-1990: A Reformer's Catalogue, pp. 164-176.
 
 

This article examines alternatives to the war on drugs in terms of the continued survival of the legal market in coca leaves. By comparing two areas of traditional coca use and cultivation-northwest Amazonas state, Brazil, and the department of Cuzco, Peru-the differences are highlighted between Peruvian and Brazilian attitudes towards coca and ethnic identity. Formulations based on a rigid dichotomy between (good) coca and (bad) cocaine are shown to confuse morality with purely practical considerations. Rather than a simple distinction between substances, the experience of indigenous drug users in South America suggests an understanding of the importance of cultural values in controlling any kind of drug consumption, and a recognition of the long-term effectiveness of " user-friendly" strategies of prevention.
 

complete article in  http://www.lindesmith.org/library/prehenm.html