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Titlebook: Lectures on Information Retrieval; Third European Summe Maristella Agosti,Fabio Crestani,Gabriella Pasi Textbook 2001 Springer-Verlag Berli

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21#
發(fā)表于 2025-3-25 05:50:30 | 只看該作者
22#
發(fā)表于 2025-3-25 11:24:25 | 只看該作者
23#
發(fā)表于 2025-3-25 14:55:14 | 只看該作者
24#
發(fā)表于 2025-3-25 17:03:26 | 只看該作者
25#
發(fā)表于 2025-3-25 20:23:27 | 只看該作者
Norbert Fuhr, archive data, museum samples, local publications and the data on river hydrology. A database of the rivers where salmonids had been reported was composed. Some of the rivers were examined for the presence of bivalves, and eight populations of . were found. Some rules governing their distribution w
26#
發(fā)表于 2025-3-26 02:29:40 | 只看該作者
27#
發(fā)表于 2025-3-26 04:27:06 | 只看該作者
28#
發(fā)表于 2025-3-26 10:20:08 | 只看該作者
ons is urgently needed. Most of the data on pearl mussels were obtained in Western Europe, while in Russia studies have been scarce. For a long time, these molluscs were only mentioned briefly in the context of pearl fishing. Recently, the number of studies devoted to . in Russia has been increasing
29#
發(fā)表于 2025-3-26 16:04:26 | 只看該作者
C. J. Keith van Rijsbergenons is urgently needed. Most of the data on pearl mussels were obtained in Western Europe, while in Russia studies have been scarce. For a long time, these molluscs were only mentioned briefly in the context of pearl fishing. Recently, the number of studies devoted to . in Russia has been increasing
30#
發(fā)表于 2025-3-26 20:47:58 | 只看該作者
Norbert Fuhr, two of which were monitored for 6?years and one for 7?years. Recommendations for conservation measures were suggested based on the obtained information about the negative influences. After the completion of the greater part of the planned study, the databases on threatened species in the study are
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