Extreme sportsWritten by Jerzy Rut, Pawel Rut, Ewa Polak | Hits: 1314Ewa PolakJerzy RutPawel Rut Keywords: extremal sports, braving the elements of earth, water, and air Abstract - Extreme sports DOWNLOAD FULL TEXTSearch by keyword: extremal sports, braving the elements of earth, water, and air