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A platform for research: civil engineering, architecture and urbanism
Features of calendar invented by author which can be transformed into Julian or Gregorian calendar system for any year.
Features of calendar invented by author which can be transformed into Julian or Gregorian calendar system for any year.
Michel perpetual calendar
Calendrier perpetuel, syste me Michel donnant instantanement le calendrier d'une annee quelconque, julienne ou gregorienne
Michel, M. (author)
Genie Civil ; 96
1930
2 pages
Article (Journal)
French
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