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1
المؤلفون: Krasimir Levkov
المصدر: Novo Znanie, Vol 6, Iss 5, Pp 95-110 (2017)
مصطلحات موضوعية: demographic situation, demographic problem, demographic transition, demographic behavior, demographic policy, lcsh:A, lcsh:General Works, reproduction of the population, population explosion, demographic crisis
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doajarticles::d279421f0853fcec6fca1e5dd17992a5Test
http://science.uard.bg/index.php/newknowledge/article/view/329Test -
2دورية أكاديمية
المؤلفون: Sabotinova, Diana
مصطلحات موضوعية: Malthusian population theory, a law of population, overpopulation, optimal population, demographic transition, population ageing
العلاقة: BFU TOM XXIII;str-84; 1311-221-X; http://research.bfu.bg:8080/jspui/handle/123456789/108Test
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3
المؤلفون: Sabotinova, Diana
مصطلحات موضوعية: a law of population, demographic transition, Malthusian population theory, optimal population, overpopulation, population ageing
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=od______9626::5f0cd293baffe8631c30584bdcb7c93aTest
http://research.bfu.bg:8080/jspui/handle/123456789/108Test