#' Polygons for 18 districts of Warsaw
#'
#' Administrative map of Warsaw
#'
#' @name Warszawa
#' @docType data
#' @keywords datasets
#' @encoding UTF-8
#'
#' @format Object of class "spatialPolygonsDataFrame" with some variables to be
#' described later.
#'
#' @source Centralny Ośrodek Dokumentacji Geodezyjnej i Kartograficznej (CODGiK)
#' \url{codgik.gov.pl}
#'
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