De Contagio Natvrali Ab Insitivis Variolis Circvmspecte Arcendo / Praeside Petro Immanvele Hartmanno, Phil. Et Med. Doct. Patholog. Therap. Chem. Et Botan. Prof. Pvbl. Ordin. ... Ad D. I. Maii MDCCLXXX. In Arte Medica Et Chirvrgica Doctoris Dignitatem Legitime Capessvrvs Pvblice Disseret Avctor Samvel Godofredvs Leissner, Lesna-Polonvs, Avgvstissimi Poloniarvm Regis A Consiliis Avlicis. Traiecti Ad Viadrum : Winter, 1780