Bramer, Banjamin (1588-1652). "Problema: Wie auss Bekanntgegebenem Sinu, eines Grades Minuten ... Canon Sinuum zu absolviren seye". Marburg: Paul Egenolff, 1614. 8vo. 30 pp. with decorative woodcut-border on title page, woodcut geometric diagram on page 11 and 11 angle calculatios. Half-cloth binding from the 19th century.