N=P P=16037 COPAC LC ref=COPAC ref=LC João de Castro Martin Cortes Pierre de Maricourt Pedro Nunes Francisco Faleiro Georg Hartmann Gerhard Mercator Robert Norman William Borough Simon Stevin Gustav Hellmann Rara magnetica yPOR yLAT yING yESP yALE Nendeln kraus Reprint 1969 y19 y196 WBI bib=WBI JOAO DE CASTRO MARTIN CORTES PIERRE DE MARICOURT PEDRO NUNES FRANCISCO FALEIRO GEORG HARTMANN GERHARD MERCATOR ROBERT NORMAN WILLIAM BOROUGH SIMON STEVIN GUSTAV HELLMANN RARA MAGNETICA NENDELN KRAUS REPRINT NUNES SIMãO Nendeln Europa Central