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Clavius, Christoph 1538-1612 Clavius's Commentary on the Sphericks of Theodosius Tripolitae: or, Spherical Elements, Necessary in All Parts of Mathematicks, Wherein the Nature of the Sphere is Considered.
 Clavius, Christoph 1538-1612 Clavius's Commentary on the Sphericks of Theodosius Tripolitae: or, Spherical Elements, Necessary in All Parts of Mathematicks, Wherein the Nature of the Sphere is Considered.
Clavius, Christoph Christophori Clavii Bambergensis E Societate Iesu, Epitome Arithmeticae Practicae Nunc Quinto Ab Ipso Auctore Anno 1606. Recognita, & Multis in Locis Locupletata
 Clavius, Christoph Christophori Clavii Bambergensis E Societate Iesu, Epitome Arithmeticae Practicae Nunc Quinto Ab Ipso Auctore Anno 1606. Recognita, & Multis in Locis Locupletata
Clavius, Christoph 1538-1612