共 50 条
- [37] The agricultural sciences in Germany:: Local problems, global research questions GAIA-ECOLOGICAL PERSPECTIVES FOR SCIENCE AND SOCIETY, 2008, 17 (03): : 295 - 297
- [39] POLISH WATER MANAGEMENT - STRUCTURE, PROBLEMS AND RESEARCH EFFLUENT & WATER TREATMENT JOURNAL, 1981, 21 (10): : 456 - 459
- [40] Research problems of formation and estimation of water resources and water availability changes of the Russian Federation Russian Meteorology and Hydrology, 2010, 35 : 13 - 19