Barentsz, Willem, approximately 1550-1597, Keere, Pieter van den, 1571-approximately 1646, and Claesz, Cornelis, approximately 1546-1609. describuntur à Guilrélmo Barentsono ; Petrus Kærius fecit. Relief shown pictorially and by bathymetric soundings. North on main map oriented toward... Cornelis Claesz,.