Dissertatio inauguralis medica De petroleo, … sub praesidio Georgii Wolffgangi Wedelii … pro licentia summos in arte medica honores, insignia et privilegia doctoralia, more maiorum, rite capessendi, publicae disquisitioni submittit Ioh. Christophorus Sproegelius, Hamburgensis, in auditorio maiori, horis ante-& pomeridianis consuetis.
Sprögel, Johann Christoph; 1709