[What do age-specific growth rates reveal?].

"This paper summarizes a generalization of the stable population theory pioneered by S. H. Preston and A. J. Coale, and elaborates on a particular case of this generalization suggested by Horiuchi and Preston. Based on the properties of age-specific growth rates to reflect in an indirect manner past population dynamics, an attempt is made to shed light on some aspects of the population history of Bulgaria, which until now have been 'hidden' due to the lack, or the unreliability of the statistical data." (SUMMARY IN ENG AND RUS)