LRPS, Hartwig. Energiereserven und Weltbevölkerung. agricultural engineering.eu, [S. l.], v. 52, n. 2, p. 74–75, 1997. DOI: 10.15150/lt.1997.2556. Disponível em: http://195.37.233.21/landtechnik/article/view/1997-52-2-074-075. Acesso em: 16 nov. 2024.