Breuning Madsen, H. (1985) “Plant production and management under drought conditions: papers presented at the symposium, 4-6 October 1982, held at Tulsa, OK, U.S.A. Ed. by John F. Stone, Wayne O. Willis. - (Developments in agricultural and managed-forest ecology, 12)”., Geografisk Tidsskrift, 85. Tilgængelig hos: https://tidsskrift.dk/geografisktidsskrift/article/view/44170 (Set: 20 januar 2026).