Gregorian reform of the calendar : Proceegings of the Vatican Conference to commemorate its 400th anniversary, 1582-1982

Edited by G. V. Coyne, s.j., M. A. Hoskin and O. Pedersen.;

Città del Vaticano

Pontificia Academia Scientiarum - Specola Vaticana

1983

XXV, 323 p. -ritr. -ill. -tab.