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De re metallica / Georg Agricola. Transl. from the 1. latin ed. of 1556 ... by Herbert Clark Hoover ...
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64 BOOK III.

Some veins run straight along on the plateaux, the hills, or plains.

£5->Tg

A —Mountainous Plain. B — Vena profunda

A Principal vein. B —Transverse vein. C —Vein cutting principal one

OBLIQUELY.

 
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