Disputatio Physica De Fontibus / Qvam Adprobante Ampolissima Facultate Philosophica in Regia Academia Vpsaliensi Sub Præsidio Viri Amplissimi Joannis Bilberg (Math: Prof: Ord.) Publicæ Candidorum censuræ Subjicit Nicolaus J. Sparrman, Uplandus: Vpsaliæ : excudit Henricus Curio, S:æ R:æ M:tis & Acad. Ups. Bibl., 1657