Download : https://www.osha.gov/Publications/OSHA3990.pdf   Download from here : https://www.who.int/docs/default-source/coronaviruse/situation-reports/20200405-sitrep-76-covid-19.pdf?sfvrsn=6ecf0977_2 Download from here : https://www.mohfw.gov.in/pdf/MindingourmindsduringCoronaeditedat.pdf   Download from here https://www.ecdc.europa.eu/sites/default/files/documents/COVID-19-infographic.pdf.pdf