I just learned there's a UNESCO publication in Esperanto.
https://unesdoc.unesco.org/ark:/48223/pf0000392316_epo/PDF/392316epo.pdf.multi
I just learned there's a UNESCO publication in Esperanto.
https://unesdoc.unesco.org/ark:/48223/pf0000392316_epo/PDF/392316epo.pdf.multi