https://2020congress.iucn.org/registration/complete-congress-experience-person-participation-fees.html
Complete Congress experience: in-person participation fees | IUCN World Conservation Congress 2020
Held every four years, the IUCN Congress is the world's largest conservation event. It brings together leaders from government, civil society, indigenous...
in personparticipation feescompletecongressexperience
https://openinventionnetwork.com/oin-2-0/participation-fees/
2.0 Participation Fees - Open Invention Network
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