Finding the 'invisible' millions who are not on maps
How open map data is filling in the world's missing maps and helping trace the spread of disease.
from BBC News - World https://ift.tt/38yEwDv
https://ift.tt/38yEwDv
from BBC News - World https://ift.tt/38yEwDv
https://ift.tt/38yEwDv
No comments