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Fiction is the genre of Selma Lagerlöf's works. Her writings encompass a wide range of themes and styles, including historical fiction, fantasy, and children's literature. Lagerlöf's stories often explore themes of nature, folklore, and the human condition, and her characters are often depicted with a deep connection to the land and its traditions. Her most famous works include "The Wonderful Adventures of Nils" and "Gösta Berling's Saga."