KROGH, L. Dryland agriculture - strategies for sustainability. R.P. Singh, J.F. Parr, & B.A. Stewart (eds.). - (Advances in soil science; 13). Geografisk Tidsskrift, [S. l.], v. 93, 1993. Disponível em: https://tidsskrift.dk/geografisktidsskrift/article/view/42248. Acesso em: 3 maj. 2024.