appendix
VIRUS G_  1 – 5
5
DATA SOURCE
5_1  
data source:
United Nations World Tourism Organisation – World Tourism Barometer (2019)
[Our World In Data merged data presented by the United Nations World Tourism Organization (UNWTO) in the Tourism Barometer, data publishers source: Census data]
http://mkt.unwto.org/barometer
1950 – 2018, International Tourist Arrivals by World Region
3
AGREEMENT
5_1  
xxx
Lawrence Livermore National Laboratory]
2
RE_SOURCES
1
INFO
1_1    xxx
xxx:
6
April 20th, 2020