Trigonometrie. Or, the doctrine of triangles ... Whereunto is annexed (chiefly for the use of seamen) a treatise of the application thereof in the three principal kinds of sailing / [Richard Norwood].

Licence: Public Domain Mark

Credit: Trigonometrie. Or, the doctrine of triangles ... Whereunto is annexed (chiefly for the use of seamen) a treatise of the application thereof in the three principal kinds of sailing / [Richard Norwood]. Source: Wellcome Collection.