This is to certify that the research article entitled:
Coronavirus COVID-19: Literatura gratuita disponible proporcionada por varias empresas, revistas y organizaciones en todo el mundo
authored by:
has been peer-reviewed and published in:
Journal of Ongoing Chemical Research
Volume: 5
Issue: 1
Pages: 35-41
DOI: 10.5281/zenodo.3758117
Publication Date: January 1, 1970
ISSN: 2651-4338