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The book describes man's discoveries of parts of planet Earth that were accidental or planned. The period from 50,000 years ago to today's efforts in space exploration is described.
Sometimes, however, even scientists grope in the dark because the Earth does not easily reveal all its remaining secrets. Reality, as it often happens, is more exciting than any novel.
At the Sources of Mathematics is a popular science work by Croatian mathematician, Japanologist, and academician Vladimir Devidé (1925–2010), published in 1979 in Osijek.
The book is both a personal and social testimony to the turbulent times the Croatian people went through, especially during the 20th century.