Endangered oceansde Helga Schier, Lynn M. ZottMateriasMarine ecologyEndangered ecosystemsMarine resources conservationSustainable fisheriesOceanOcean, juvenile literatureEdiciones (1)Endangered oceans (2014)Greenhaven Press, a part of Gale, Cengage Learning · inglés · ISBN 9780737760521Más obras de Helga SchierEEssential GermanEssential GermanIIntermediate GermanIntermediate GermanIntermediate German