Hasholt B. Porter W. McDonnell: INTRODUCTION TO MAP PROJECTIONS New York 1979, VII, 174 s., ill., 28 cm, S.Fr. 34,-. Marcel Dekker Inc. gt [Internet]. 1981 Jan. 1 [cited 2024 Jul. 18];81. Available from: https://tidsskrift.dk/geografisktidsskrift/article/view/45154