Student World Atlas (Maailma atlas)
~ Area at highest risk of desertificat ion
" Jao
I Ap r Jul Oe 1
· Poor air q uality'
SANTIAGO, Chile
' Cures exceeamq at leas! one of the Wo rld Health
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O'ganlzavon·s (WHO) onnual mean gUidelines fo,. dll
qualrry