Source

C 1971 V1 T4 — 04. Births, deaths, natural increase and estimated net emigration in the intercensal period 1966-1971 for each province and county and average annual rates per 1,000 average population

C 1971 V1 T4 — 04. Births, deaths, natural increase and estimated net emigration in the intercensal period 1966-1971 for each province and county and average annual rates per 1,000 average population, published by CSO.