 | THE USE OF ENCLOSED PLANKTON COMMUNITIES IN AQUATIC ECOTOXICOLOGY fate and effects of mercury, cadium and selected aromatic organics in a marine model ecosystem | KUIPER,J. | € 15.00 |
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| THE USE OF FISH POISONS IN SOUTH AMERICA Smithsonian Report (reprinted) | KILLIP, E.P. & A.C. SMITH | € 5.00 |
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| TIER- UND PFLANZENLEBEN DES MEERES | NATANSON,A. | € 7.00 |
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