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The book explores the history, science, and cultural significance of calendars, exploring how different civilizations measured time. The author details the development of calendars, from ancient lunar and solar systems to the modern Gregorian calendar.
The world-famous and used Linguaphone English course is an excellent work material for self-studying the English language at home.
The book offers answers to many questions about the universe, human history, modern technologies, plant and animal life and the Earth.