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#' Catalogue of countries
#'
#' Catalogue of countries, ISO-codes and official languages
#'
#' @format A data frame with 189 rows and 5 variables:
#' \describe{
#' \item{alpha3}{ISO 3166-3 code of the country}
#' \item{alpha2}{ISO 3166-2 code of the country}
#' \item{country_name}{Country name}
#' \item{additional_names}{Additional names of the country}
#' \item{official_languages}{Official languages}
#' }
#'
"countries"
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