Henno Martin Book order

"In 1935 [Henno Martin] left Germany together with his friend and colleague, Hermann Korn, to do geological research in South-West-Africa. At the outbreak of World War Two they fled into the Namib desert, where they lived for two and half years. The undescribable physical and mental hardship they had to bare [...], is described in this book, The Sheltering Desert."--P.[2].