Nielsen, N. (1938) “Hint to travellers. Eleventh edition. Volume two. Organization and equipment, scientific observation, health, sickness, and injury. Edited by the secretary. Royal Geographical Society. London 1938. Pris: 16 sh. (17X12 cm, 472 S.)”., Geografisk Tidsskrift, 41. Tilgængelig hos: https://tidsskrift.dk/geografisktidsskrift/article/view/48218 (Set: 23 december 2025).