Chapter 15. Demography: ''The Abkhazians: A Handbook'' by George Hewitt (Editor) Richmond, Surrey: The Curzon Press 1999 (Caucasus World /Peoples of the Caucasus & The Black Sea), pp. -239.
Demography has many aspects. With regard to the Abkhaz, their famed longevity comes immediately to mind. However, it is difficult to prove just how old one is when, at the supposed time of one s birth, registration was the exception rather than the norm. It has been noted that in the (15 January) 1970 All-Union Census the number of people in some higher age cohorts was actually larger than had been the size of corresponding (eleven year younger) cohorts in the (15 January) 1959 Census. Unless we assume a pensioner-invasion of the USSR in between, this must caution us to realize that some people may have a tendency in old age to advance more rapidly in years than the rest of us!Read more: Ethno-demographic history of Abkhazia, 1886 - 1989, by Daniel Müller