The World Calendar:
pure mathematics in daily life.
Leaflet published by The World Calendar Association in New York providing information on the relationship between the world calendar and mathematics, in addition to a print of the world calendar, information on leap days and year days.
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New York : The World Calendar Association, Inc., [193?]
This item is held in the Department of Ephemera.
Physical description: 1 folded sheet [6 p.] : ill. ; 16 x 9 cm.
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Reproduction rights owned by the National Library of Ireland.