Economics, BIODIVERSITY CONSERVATION, Biodiversity, Biotic communities, LCSH: Biodiversity, LCSH: Biodiversity conservation, Dewey: 333.95, LCSH: Biotic communities, LCC: QR97.X46, Economics, BIODIVERSITY CONSERVATION, Biodiversity, Biotic communities, LCSH: Biodiversity, LCSH: Biodiversity conservation, Dewey: 333.95, LCSH: Biotic communities, LCC: QR97.X46