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17. Relationships between population and environment in rural areas of developing countries. Rudel TI. Popul Bull UN; 1991 Nov; (31-32):52-69. PubMed ID: 12343671 [Abstract] [Full Text] [Related]
19. [Human ecology: current state and the prospects of its development]. Agadzhanian NA. Vestn Akad Med Nauk SSSR; 1989 Nov; (8):4-14. PubMed ID: 2816003 [Abstract] [Full Text] [Related]