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Signature	Maker	Instruments	Comments	Location	References
LAUN, HARTOG ABRAHAM VAN	Holland, 1733-1815, MIM OIM PHIM	Microscope = LEY; Planetariums = LEY, Physics Laboratory, Amsterdam; Attwood Machine = Museum of Education, The Hague.	pupil of John Cuthbertson; see H. van Laun en Zon.	Amsterdam.	Mörzer Bruyns 1 & 2; Rooseboom 1; van der Star 1.
LAUN, HARTOG ABRAHAM VAN	Holland, 1733-1815, MIM OIM PHIM	Microscope = LEY; Planetariums = LEY, Physics Laboratory, Amsterdam; Attwood Machine = Museum of Education, The Hague.	pupil of John Cuthbertson; see H. van Laun en Zon.	Amsterdam.	Mörzer Bruyns 1 & 2; Rooseboom 1; van der Star 1.

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