![Cytech Mobile on Twitter: "South America becomes the epicentre of #COVID19 spread. Source: https://t.co/3APzzaCEml https://t.co/zPlhBpW9Ca" / Twitter Cytech Mobile on Twitter: "South America becomes the epicentre of #COVID19 spread. Source: https://t.co/3APzzaCEml https://t.co/zPlhBpW9Ca" / Twitter](https://pbs.twimg.com/media/EZailLwWoAUrBKE.jpg)
Cytech Mobile on Twitter: "South America becomes the epicentre of #COVID19 spread. Source: https://t.co/3APzzaCEml https://t.co/zPlhBpW9Ca" / Twitter
![English: This hand colored map is a copper plate engraving, dating to 1850, by the legendary American mapmaker S. A. Mitchell, the elder. It represents Spain and Portugal. Includes the Balearic English: This hand colored map is a copper plate engraving, dating to 1850, by the legendary American mapmaker S. A. Mitchell, the elder. It represents Spain and Portugal. Includes the Balearic](https://c8.alamy.com/comp/MMTXHM/english-this-hand-colored-map-is-a-copper-plate-engraving-dating-to-1850-by-the-legendary-american-mapmaker-s-a-mitchell-the-elder-it-represents-spain-and-portugal-includes-the-balearic-islands-of-ibiza-majorca-and-minorca-lower-right-quadrant-features-inset-map-of-environs-of-madrid-prepared-by-hn-burroughs-for-the-1850-edition-of-mitchells-new-general-atlas-dated-and-copyrighted-entered-according-to-act-of-congress-in-the-year-1846-by-hn-burroughs-in-the-clerks-office-of-the-district-court-of-the-eastern-district-of-pennsylvania-spain-and-portugal-1850-catalonia-MMTXHM.jpg)
English: This hand colored map is a copper plate engraving, dating to 1850, by the legendary American mapmaker S. A. Mitchell, the elder. It represents Spain and Portugal. Includes the Balearic
![Mapa de co-citación de autores – Redes asociativas (PFNETs) Fuente:... | Download Scientific Diagram Mapa de co-citación de autores – Redes asociativas (PFNETs) Fuente:... | Download Scientific Diagram](https://www.researchgate.net/profile/Sandra-Miguel/publication/299022890/figure/fig2/AS:391405663997967@1470329790729/Mapa-de-co-citacion-de-autores-Redes-asociativas-PFNETs-Fuente-White-2002-631_Q320.jpg)