Title Authors Year
The nutritional status of Picea abies (L.) Karst. across Europe, and implications for "forest decline".

Cape, J.N…

1990
Forest soil chemical changes between 1949-50 and 1987

Billett, M.…

1990
Seasonal changes in amino acids, protein and total nitrogen in needles of fertilised Scots pine trees

Näsholm, T…

1990
Air pollution and tree-dwelling aphids. Population Dynamics of Forest Insects

McNeill, S…

1990
Effects of N-emissions on nutrient status and vitality of Pinus sylvestris near a hen house.

…

1989
Environmental Health Criteria 85 Lead- Environmental Aspects

WHO,

 		1989
Indigenous and cultivated plants as bioindicators

Weinstein,…

1989
Environmental Health Criteria 86 Mercury- Environmental Aspects

WHO,

 		1989
Long-term change in the suitability of welsh streams for dippers Cinclus cinclus as a result of acidification and recovery: A modelling study.

Ormerod, S.…

1989
Results of the harmful effects of water pollutants to Daphnia magna in the 21 day Reproduction Test

Kühn, R ;…

1989