Autosegmental phonology is a modification of generative phonology[?] introduced by John Goldsmith in his PhD thesis in 1976. He introduced the notion of parallel tiers of segments and called this autosegments a name which is a bit misleading. As an application example he presented a detailed phonological analysis of the Igbo language[?] spoken in Nigeria.
... of age or older. The average household size is 2.45 and the average family size is 3.00.
In the town the population is spread out with 13.8% under the age of 18, 34.0% ...