CHRISTIANSEN, S. Grit Lerche and Axel Steensberg: AGRICULTURAL TOOLS AND FIELD SHAPES : Twenty five years of activity by the international secretariat. (International Secretariat for Research on the History of Agricultural Implements. Publication No. 3) . Copenhagen 1980, 107 s., ill., 23 cm, Kr. 60,-. Nationalmuseet. Geografisk Tidsskrift, [S. l.], v. 81, 1981. Disponível em: https://tidsskrift.dk/geografisktidsskrift/article/view/45165. Acesso em: 20 dec. 2024.