Stabilisation of movable feasts : summary of replies from religious authorities to the letter from the Secretary-General of the League of Nations communicating the act regarding the economic and social aspects of fixing movable feasts.
League of Nations.Organisation for Communications and Transit.
Geneva : League of Nations,
1934.
"Official no.: C.335.M.154.1934.VIII."
At head of title: Geneva, August 3rd, 1934.
Easter.
Calendar.