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Publicado por G & C Merrian Co, Springfield, Ill, 1974
ISBN 10: 087779040XISBN 13: 9780877790402
Librería: The Book Collector, Inc. ABAA, ILAB, Fort Worth, TX, Estados Unidos de America
Libro Original o primera edición
Hardcover. Condición: Very Good. Estado de la sobrecubierta: Very Good. 1st Edition. 256 pages with plates and photographs (some in color) and index. Quarto (10"x 7 1/2") bound in original publisher's red cloth with gilt lettering to cover with gilt decoration on cover in original pictorial jacket. First edition. The "Christian calendar" is the term traditionally used to designate the calendar commonly in use, although it originated in pre-Christian Rome. The Christian calendar has years of 365 or 366 days. It is divided into 12 months that have no relationship to the motion of the moon. In parallel with this system, the concept of "weeks" groups the days in sets of 7. Two main versions of the Christian calendar have existed in recent times: The Julian calendar and the Gregorian calendar. The difference between them lies in the way they approximate the length of the tropical year and their rules for calculating Easter. But the Julian and Gregorian calendars inherited a lot of their structure from the ancient Roman calendar. Therefore a study of that calendar is also relevant here. Condition: Underlining, previous owner's name on half title page else about very good in a very good to fine dust jacket.
Publicado por Springfield, MA: [1974] Quarto, G & C Merriam Company, 1974
Librería: Alec R. Allenson, Inc., Westville, FL, Estados Unidos de America
Hardcover. 256 p.; 90 color and 60 halftone illus. in text; 25.5 cm. Good red cloth, head of spine rubbed, rear ep cracked, in il. dj.