APIS Bibliography

Title	Authors	Year
Changes in species composition of semi-natural vegetation associated with the increase in atmospheric inputs of nitrogen	Pitcairn, C…	1991
A Field-Study of Fertilization and Embryonic Development in the Common Frog (Rana-Temporaria) with Particular Reference to Acidity and Temperature	Beattie, R.…	1991
Zeigerwerte von Pflanzen in Mitteleuropa	Ellenberg,…	1991
Influence of HN3 and (HN4)2 SO4 on heathland vegetation	Van der…	1991
Forestry and soil protection in the UK	Moffatt, A.…	1991
Conservation of freshwater fish in the British Isles: the current status and biology of threatened species. Aquatic Conservation	Maitland, P…	1991
Increases in soil acidity in north west Wales between 1957 and 1990	…	1991
Physiological effects of long term exposure to low concentrations of SO2 and NH3 on poplar leaves.	Hove, L.W.A…	1991
Nitrate in soil water	Westling, O…	1991
Atmospheric Transport of Iron and Its Deposition in the Ocean	Duce, R. A…	1991