Girl Genius Volume 3 Agatha Heterodyne the Monster Engine (Paperback) → Hardcover ISBN-13: 9781890856328 ISBN-10: 1890856320 Genres: Science Fiction & Fantasy, Humor & Entertainment, Comics & Graphic Novels 10 Girl Genius Volume 3 Agatha Heterodyne the Monster Engine (Hardcover) → Paperback ISBN-13: 9781890856335 ISBN-10: 1890856339 Genres: Science Fiction & Fantasy, Humor & Entertainment, Comics & Graphic Novels 3 Girl Genius Volume 4 Agatha Heterodyne the Circus of Dreams (Hardcover) → Paperback ISBN-13: 9781890856373 ISBN-10: 1890856371 Genre: Comics & Graphic Novels 2 |