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Teràpia ocupacional (2)
Turisme (2)
Twitter (2)
Zooplàncton (2)
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159.9 - Psychology (1)
339 - Trade. Commerce. International economic relations. World economy (1)
371 - Education and teaching organization and management (1)
378 - Higher education. Universities. Academic study (1)
502 - The environment and its protection (1)