| Title | Authors | Year | 
|---|---|---|
| Global amphibian declines: A problem in applied ecology | 
                               Alford, R.A…  | 
                                                                                        1999 | 
| Ellenberg's indicator values for British plants: ECOFACT volume 2 technical annex. | 
                               Hill, M.O…  | 
                                                                                        1999 | 
| Effect of vanadium on the growth of soybean seedlings | 
                               Wang, J ;…  | 
                                                                                        1999 | 
| Environmental effects of manganese and proposed freshwater guidelines to protect aquatic life in British Columbia | 
                               Reimer, P.…  | 
                                                                                        1999 | 
| Chemistry of Atmospheres | 
                               Wayne, R.P…  | 
                                                                                        1999 | 
| The fate of mineral nitrogen in a fen with Sphagnum fallax Klinggr. and Carex rostrata Stokes (Massif-central, France) | 
                               Francez, A.…  | 
                                                                                        1999 | 
| Mapping of ammonia pollution with epiphytic lichens in the Netherlands | 
                               Van Herk, C…  | 
                                                                                        1999 | 
| The Kyoto Protocol: A guide and assessment | 
                               Grubb, M.;…  | 
                                                                                        1999 | 
| Distribution in Portugal of some pollutants in the lichen Parmelia sulcata | 
                               Freitas, M…  | 
                                                                                        1999 | 
| The fate of NH4NO3 added to Sphagnum magellanicum carpets at five European mire sites | 
                               Williams, B…  | 
                                                                                        1999 |