For citations:
Valentey S.D., Dzhanaeva N.G. Ecological direction in the system of knowledge on population. Statistics and Economics. 2017;(5):61-70. (In Russ.) https://doi.org/10.21686/2500-3925-2017-5-61-70
Valentey S.D., Dzhanaeva N.G. Ecological direction in the system of knowledge on population. Statistics and Economics. 2017;(5):61-70. (In Russ.) https://doi.org/10.21686/2500-3925-2017-5-61-70