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Signature	Maker	Instruments	Comments	Location	References
RIVA, GIOVANNI	Italyc.1750, MIM SIM	Magnetic Compasses for plane tables = P.C., P.C. (1987); Compass box, 1750 = BM.		Venice.	Price 3; RSW.
RIVA, GIOVANNI	Italyc.1750, MIM SIM	Magnetic Compasses for plane tables = P.C., P.C. (1987); Compass box, 1750 = BM.		Venice.	Price 3; RSW.

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