R/petite-region-agricole.R
paris_pra_1975_labour.Rd
terre labourable only
paris_pra_1975_labour(tl0, keep_pras = FALSE)
We take all PRA directly adjacent to paris as well as CEINTURE DE PARIS as on this map: https://driaaf.ile-de-france.agriculture.gouv.fr/IMG/pdf/RA_R11_cle4ce9b1.pdf