The modern calendar has Roman Catholic roots. As the sun does not adhere exactly to the earthly calendar, leap days are ...

The need for secret communications arose very early in civilization. It progressed due to the “intellectual arms race” ...

Promise Day, occurring on February 11th during Valentine's Week, emphasizes the importance of heartfelt promises in all types ...

Gemmarum Antiquarum Delectus; Ex Præstantioribus Desumptus, Quæ In Dactyliothecis Ducis Marlburiensis Conservantur. - Choix De Pierres Antiques Gravées Du Cabinet Du Duc De Marlborough,Tom. I. (II.) ...

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