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Comparative severity of COVID-19 cases caused by Alpha, Delta or Omicron SARS-CoV-2 variants and its association with vaccination. [PDF]

open access: yesEnferm Infecc Microbiol Clin (Engl Ed)
Varea-Jiménez E   +12 more
europepmc   +1 more source

La participació i el desenvolupament sostenible [PDF]

open access: yes, 2004
Cerrillo i Martínez, Agustí
core  

La particpació electoral al Penedès, un cas d'estudi local [PDF]

open access: yes, 2012
Fernández, David   +3 more
core  

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