Mechanical universe : the astrarium of Giovanni de' Dondi / [by] Silvio A. Bedini and Francis R. Maddison.

69 p. :, 31 cm.

Q11 .P6 n.s. vol.56 pt.5 c.3

Dondi dall'Orologio, Giovanni, -- 1318?-1389., Astronomy, Medieval., Planetariums.

Pennsylvania--Philadelphia: American Philosophical Society, 1966.

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