{"id":"obr:work:advance-and-retreat","slug":"advance-and-retreat","url":"https://openbookrank.com/en/book/advance-and-retreat","urls":{"en":"https://openbookrank.com/en/book/advance-and-retreat"},"title":"Advance and Retreat","titles":{"en":"Advance and Retreat"},"author":{"id":"obr:author:null","name":"Harry Turtledove","api":"https://openbookrank.com/api/v1/authors/null.json"},"year":2002,"pages":445,"originalLanguage":null,"identifiers":{"wikidata":"Q65059204","openLibrary":null,"isbn13":null,"isbns":[],"isbnByLanguage":{},"googleBooks":null,"hardcover":"advance-and-retreat-2002","amazon":null},"score":{"value":null,"scale":10,"ratings":0,"confidence":null,"rawAverage":null,"method":"bayesian-weighted-average","priorWeight":147,"minRatings":50,"methodology":"https://openbookrank.com/en/methodology"},"sources":[],"ranks":[],"popularity":{"ratingsPercentile":0,"wikipediaPageviews":null,"editions":null},"series":{"id":"obr:series:war-between-the-provinces","slug":"war-between-the-provinces","title":"War Between the Provinces","position":3,"volumes":3,"api":"https://openbookrank.com/api/v1/series/war-between-the-provinces.json"},"awards":[],"adaptations":[],"similar":[],"citation":"BookRank (openbookrank.com) lists \"Advance and Retreat\" by Harry Turtledove but does not score it: it has fewer than 50 reader ratings (snapshot 2026-10-28).","snapshot":"2026-10-28","license":"CC-BY-4.0"}