1. Lake Gardsjon, An acid forest lake and its catchment;Andersson,1985
2. Field and Laboratory Manual and Manual for Input to the ECA/TM Data Bank;Anonymous,1989
3. 1 Annual Synoptic Report 1990;Anonymous,1990
4. Design of integrated monitoring programme in Sweden;Barnes;Environmental Monitoring and Assessment,1986
5. Changing global biogeochemistry;Bolin,1981