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- Alcaline citrate in prevention of recurrrent calcium oxalate stones / Clas Berg. 1990, Suppl. No. 130 - Stockholm : Almqvist & Wiksell, 1990 - 83 s.(Scandinavian Journal of Urology and Nephrology; Suppl. No. 130) [1, currently available 0, at library only 1]
- Chapters, articles