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Yearbook of the Federal Republic of Germany : calendar year 1987

Alemania. Federal and State Hydrological and Metereological Authorities; PHI (Federal Institute of Hydrology and the German Research Association, 1990)

Yearbook of the Federal Republic of Germany : calendar year 1990

Alemania. Federal and State Hydrological and Metereological Authorities; PHI (Federal Institute of Hydrology and the German Research Association, 1993)

Yearbook of the Federal Republic of Germany : calendar year 1988

Alemania. Federal and State Hydrological and Metereological Authorities; PHI (Federal Institute of Hydrology and the German Research Association, 1991)

Yearbook of the Federal Republic of Germany : calendar year 1989

Alemania. Federal and State Hydrological and Metereological Authorities; PHI (Federal Institute of Hydrology and the German Research Association, 1993)