Παραπομπή APA

Applied Population Research Trust. (1990). Population Research Abstracts. Applied Population Research Trust.

Παραπομπή Chicago Style

Applied Population Research Trust. Population Research Abstracts. Bangalore-560008: Applied Population Research Trust, 1990.

Παραπομπή MLA

Applied Population Research Trust. Population Research Abstracts. Applied Population Research Trust, 1990.

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