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Prints Space Educational Aids
Various titles
Two leaflets issued by Space Educational Aids Ltd., Aylesbury, in January 1966, describing their "Geocentric Orrery" and "Wallchart Orrery". (The company was formed by J. R. Millburn to design and market these and other modern forms of orrery). Presented by J. R. Millburn Esq.
[1996-171]
1966