{"id":"obr:work:cala-prawda-o-planecie-ksi","slug":"cala-prawda-o-planecie-ksi","url":"https://openbookrank.com/en/book/cala-prawda-o-planecie-ksi","urls":{"en":"https://openbookrank.com/en/book/cala-prawda-o-planecie-ksi","pl":"https://openbookrank.com/pl/ksiazka/cala-prawda-o-planecie-ksi"},"title":"Cała prawda o planecie Ksi","titles":{"en":"Cała prawda o planecie Ksi","pl":"Cała prawda o planecie Ksi","uk":"Уся правда про планету Ксі"},"author":{"id":"obr:author:null","name":"Janusz Zajdel","api":"https://openbookrank.com/api/v1/authors/null.json"},"year":1983,"pages":174,"originalLanguage":null,"identifiers":{"wikidata":"Q5055613","openLibrary":null,"isbn13":null,"isbns":[],"isbnByLanguage":{},"googleBooks":null,"hardcover":"cala-prawda-o-planecie-ksi","amazon":null},"score":{"value":null,"scale":10,"ratings":7,"confidence":null,"rawAverage":null,"method":"bayesian-weighted-average","priorWeight":147,"minRatings":50,"methodology":"https://openbookrank.com/en/methodology"},"sources":[],"ranks":[],"popularity":{"ratingsPercentile":48,"wikipediaPageviews":null,"editions":null},"series":{"id":"obr:series:fantazja-przygoda-rozrywka","slug":"fantazja-przygoda-rozrywka","title":null,"position":null,"volumes":7,"api":"https://openbookrank.com/api/v1/series/fantazja-przygoda-rozrywka.json"},"awards":[],"adaptations":[],"similar":[],"citation":"BookRank (openbookrank.com) lists \"Cała prawda o planecie Ksi\" by Janusz Zajdel 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"}