Christiansen, Sofus. “William C. Brice (ed.): ENVIRONMENTAL HISTORY OF THE NEAR AND MIDDLE EAST SINCE THE LAST ICE AGE Academic Press Inc. (London) Ltd. 1978. XX, 384 s., 24 Cm, £ 16”. Geografisk Tidsskrift - Danish Journal of Geography, vol. 81, Jan. 1981, https://tidsskrift.dk/geografisktidsskrift/article/view/45147.