Gamle Suldal; Gards-OG Aettesoge

Does anyone know where I could get a copy of Gamle Suldal; Gards-OG Aettesoge second edition or newer by Hallvard M Hoftun ISBN82-990035-1-2 A cousin was visiting the area and was given a copy. She has loaned it to me but it is definitely a book that I want my own copy of. Any ideas greatly appreciated. Second hand would be fine.