@article {, title = {Tecnolog{\'\i}a del pastoreo en las comunidades del ca{\~n}on del Colca, Arequipa, Peru}, journal = {Talleres de la Central de Credito Cooperativo del Peru, Arequipa}, year = {1985}, note = {cited by Browman 1990 concerning herd sizes}, author = {Gomez Rodr{\'\i}guez, J. de la C.} }