1
Published: 2009.
Superior document: History of science and medicine library, v. 12
2
Published: 2012.
Superior document: Time, astronomy, and calendars, v. 2
3
Published: 2009.
Superior document: History of science and medicine library, v. 12
4
Published: 2012.
Superior document: Time, astronomy, and calendars, v. 2
5
Published: 2015.
Superior document: Time, Astronomy, and Calendars, Volume 5
6
Published: 2015.
Superior document: Time, Astronomy, and Calendars, Volume 5