705.7 Lazarus ERCKER. Fleta minor. The laws of art and nature, in knowing judging, assaying, fining, refining and inlarging the bodies of confin'd metals. In two parts. The first contains assays of Lazarus Erckern... The second contains essays on metallick words, as a dictionary to many pleasing discourses [by C. Berward. Translated] by Sir John Pettus... 2° London: for the author by T. Dawks 1686 Ferguson Young Nat Union Cat Wisconsin