#' Description of Eurobarometer Waves (1996-2019)
#'
#' A controlled vocabulary for creating variable names.
#'
#' @format A data_frame of three variables:
#' \describe{
#' \item{zacat_code}{The ZACAT code (basis of the file names.)}
#' \item{wave}{The Eurobarometer wave number}
#' \item{timeframe}{Timeframe, not always exact.}
#' \item{description}{Short description of the topics of the survey wave}
#' }
#' @seealso read_rds
"eb_waves"
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