| Title | Authors | Year | 
|---|---|---|
| Indigenous and cultivated plants as bioindicators | 
                               Weinstein,…  | 
                                                                                        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 | 
| Determination of plant-available soil manganese | 
                               Reisenauer…  | 
                                                                                        1988 | 
| Lake Acidification in the United Kingdom 1800-1986 | 
                               Battarbee,…  | 
                                                                                        1988 | 
| Ecological Change in the Uplands | 
                               Ratcliffe,…  | 
                                                                                        1988 | 
| Environmental Health Criteria 61 Chromium | 
                               WHO,  | 
                                                                                        1988 | 
| Response of blueberry species to excessive manganese | 
                               Korcak, R.…  | 
                                                                                        1988 |