The first resource : wild species in the North American economy /

por Prescott Allen, Christine 1949-
Publicado 1986

What's wildlife worth? : economic contributions of wild plants and animals to developing countries /

por Prescott Allen, Robert, Prescott Allen, Robert, Prescott Allen, Christine
Publicado 1982

Genes from the wild : using wild genetic resources for food and raw materials /

por Prescott Allen, Robert
Publicado 1983

Cuanto vale la vida silvestre? /

por Prescott-Allen, Robert
Publicado 1982

Assessing the sustainability of uses of wild species : case studies and initial assessment procedure /

Publicado 1996