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Xxxx v xxxxxxxxx xxxxxxx xxxxxxxxxxxxx xxxxxxxx x xxxxxxxx x xxxxxx je xxxxxxxxx xxxxxxxxxxxx xxxxxxxxxx (xxxxxxxx xxxxxxxxxx) xxxxxxxxxx xxxxxxxxxx xxxxxxxxx xxxx xxxxxxxxxxx, xxxxx xxxxx xxxxxxxx xxxxxxxx vědy xxxxxx xxxx xxx xxxxx rok (§19 xxxx. 1 xxxxxxxx x. 128/1975 Xx.).