Maps of ecological structure of the area and landscape use in the scale 1 : 50 000 (on the example of the Wloclawek Voivodeship) - Lewandowski, Wojciech; Ostaszewska, Katarzyna; Conference: COMECON III.2 ( 3-8 septembre 1990 : Warszawa) (1990)
bibliogr. p. 67
Keywords: Utilisation du sol; Ecologie; Cartographie; Pologne