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PENTHER, Johann Friedrich. *Praxis geometriæ*, in which not only all cases encountered in field surveying—using rods, the astrolabe, the compass, and the mensul...—are clearly discussed... are faithfully presented, 5th edition, Augsburg (Jermiah Wolffs & Johann Michael Probst) 1755. Folio, sheepskin (restored), Title frontispiece, [viii] + 97 + [v] with 25 unfolded plates + engraved title page Zugabe zur Praxi Geometriæ …Augsburg 1754 p[i] + 55 with 14 unfolded plates numbered XXVI to XXXIX. Water stains at the plate mounts; one plate has a minor tear; text is clean. Provenance: library of Jean-Nérée RONFORT (1943–2012)
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