Matematiska o. fysikaliska förströelser

MATEMATIK. SCHWENTER, D. Deliciae Physico-Mathematicae. Oder Mathemat. und Philosophische Erquickstunden.... (I, of 3). Nürnberg (in Verlegung Jeremiae Dümlers) 1651.Small 4.o. Engraved title, many woodcut diagrams and illustrations in text. Contemporary vellum, worn, blank spine. Some spotting in upper margin, some foxing.