Nielsen N. 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.). gt [Internet]. 1. januar 1938 [henvist 7. maj 2024];41. Tilgængelig hos: https://tidsskrift.dk/geografisktidsskrift/article/view/48218