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Atualizado em 13/05/2026 · De todos da iMusic
![Cover for Hans Walser · The Golden Ratio: Geometric and Number Theoretical Considerations (Paperback Book) [2024 edition] (2024)](https://imusic.b-cdn.net/images/item/original/891/9783662698891.jpg?hans-walser-2024-the-golden-ratio-geometric-and-number-theoretical-considerations-paperback-book&class=scaled&v=1750959385)
![Cover for Hans Walser · Spirals, Helical Lines, and Spiral-Like Figures: Mathematical Playfulness in Two and Three Dimensions (Paperback Book) [2024 edition] (2024)](https://imusic.b-cdn.net/images/item/original/301/9783662689301.jpg?hans-walser-2024-spirals-helical-lines-and-spiral-like-figures-mathematical-playfulness-in-two-and-three-dimensions-paperback-book&class=scaled&v=1749651094)
![Cover for Hans Walser · Spiralen, Schraubenlinien und spiralartige Figuren: Mathematische Spielereien in zwei und drei Dimensionen (Paperback Book) [1. Aufl. 2022 edition] (2022)](https://imusic.b-cdn.net/images/item/original/315/9783662651315.jpg?hans-walser-2022-spiralen-schraubenlinien-und-spiralartige-figuren-mathematische-spielereien-in-zwei-und-drei-dimensionen-paperback-book&class=scaled&v=1655870895)
![Cover for Hans Walser · Symmetrie - Einblicke in die Wissenschaft (Paperback Book) [1998 edition] (1998)](https://imusic.b-cdn.net/images/item/original/138/9783815425138.jpg?hans-walser-1998-symmetrie-einblicke-in-die-wissenschaft-paperback-book&class=scaled&v=1427150354)