{"id":"obr:work:urodziny-milusia","slug":"urodziny-milusia","url":"https://openbookrank.com/pl/ksiazka/urodziny-milusia","urls":{"pl":"https://openbookrank.com/pl/ksiazka/urodziny-milusia"},"title":"Urodziny Milusia","titles":{"en":"Urodziny Milusia","fr":"Urodziny Milusia","pl":"Urodziny Milusia"},"author":{"id":"obr:author:null","name":"Janusz Christa","api":"https://openbookrank.com/api/v1/authors/null.json"},"year":null,"pages":null,"originalLanguage":null,"identifiers":{"wikidata":"Q20726346","openLibrary":null,"isbn13":null,"isbns":[],"isbnByLanguage":{},"googleBooks":null,"hardcover":null,"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:kayko-and-kokosh","slug":"kayko-and-kokosh","title":"Kayko and Kokosh","position":null,"volumes":24,"api":"https://openbookrank.com/api/v1/series/kayko-and-kokosh.json"},"awards":[],"adaptations":[],"similar":[],"citation":"BookRank (openbookrank.com) lists \"Urodziny Milusia\" by Janusz Christa 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"}