World resourcesde John D. Baines, Barbara JamesMateriasConservation of natural resourcesJuvenile literatureConservation of natural resources, juvenile literatureEdiciones (1)World Resources (Save Our World) (1995)Hodder Wayland · ISBN 9780750015035Más obras de John D. BainesFood and farmingThe encyclopedia of world geographyFood for LifeThis fragile earth