共 50 条
- [1] Changes in the fish community of Lake Ladoga during the last 50 years PROCEEDINGS OF THE THIRD INTERNATIONAL LAKE LADOGA SYMPOSIUM 1999, 2000, (129): : 84 - 88
- [7] CHANGES IN LATITUDINAL THERMAL GRADIENT DURING LAST 50,000 YEARS TRANSACTIONS-AMERICAN GEOPHYSICAL UNION, 1971, 52 (04): : 229 - &