INFLUENCE OF ELBE ON POLLUTION OF NORTH SEA

[21] LUCHT F, 1953, DT HYDROGR Z, V6, P186

[22] NOTHLICH I, 1967, MITT WASSER SCHIFFAH, V17, P1

[23] Postma H., 1955, DEUTSCH HYDROGRAPH Z, V8, P137

[24] Schulz H., 1961, Archiv fuer Hydrobiologie Suppl, V26, P5

[25] SIMON WG, 1953, MITT WASS SCHIFFAHRT, V8, P1

[26] 1902, JAHRBUCH HAMBURGISCH, V19, P65

[27] 1908, JAHRBUCH HAMBURGISCH, V26, P249

[21] LUCHT F, 1953, DT HYDROGR Z, V6, P186

[22] NOTHLICH I, 1967, MITT WASSER SCHIFFAH, V17, P1

[23] Postma H., 1955, DEUTSCH HYDROGRAPH Z, V8, P137

[24] Schulz H., 1961, Archiv fuer Hydrobiologie Suppl, V26, P5

[25] SIMON WG, 1953, MITT WASS SCHIFFAHRT, V8, P1

[26] 1902, JAHRBUCH HAMBURGISCH, V19, P65

[27] 1908, JAHRBUCH HAMBURGISCH, V26, P249