| Title | Authors | Year | 
|---|---|---|
| A global assessment of natural sources of atmospheric trace metals | 
                               Nriagu, J.O…  | 
                                                                                        1989 | 
| Results of the harmful effects of water pollutants to Daphnia magna in the 21 day Reproduction Test | 
                               Kühn, R ;…  | 
                                                                                        1989 | 
| Manganese induced haematological and biochemical anomalies in Heteropneustes fossilis | 
                               Garg, V. K…  | 
                                                                                        1989 | 
| Unifying nutrient-chlorophyll relationships in lakes. | 
                               Prairie, Y.…  | 
                                                                                        1989 | 
| Lead hazards to fish, wildlife and invertebrates: a synoptic review | 
                               Eisler, R…  | 
                                                                                        1989 | 
| Detection of manganese deficiency and toxicity in plants. Manganese in soils and plants | 
                               Hannam, R.…  | 
                                                                                        1988 | 
| Environmental Health Criteria 61 Chromium | 
                               WHO,  | 
                                                                                        1988 | 
| Genetic differences in plant tolerance to manganese toxicity | 
                               Foy, C. D…  | 
                                                                                        1988 | 
| The response of the feather moss, pleurozium-schreberi, to 5 years of simulated acid precipitation in the canadian boreal forest | 
                               Hutchison,…  | 
                                                                                        1988 | 
| Response of blueberry species to excessive manganese | 
                               Korcak, R.…  | 
                                                                                        1988 |