| http://www.w3.org/ns/prov#value | - But these efforts at artificially increasing and improving the population have benefited mainly the fishermen in the northern part of the sea, altering the regional proportions of the catch; for example, in the Volga sector the proportion of the total Caspian sturgeon catch rose from 35 to 64 percent between 1931-35 and 1971.
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