Paqueo, V. B., & Smith, P. (1974). Economic-demographic models: Uses, limitations and research problems. s.n.
Lua i Stíl Chicago (17ú heag.)Paqueo, Vicente B., agus Peter Smith. Economic-demographic Models: Uses, Limitations and Research Problems. [S.l: s.n, 1974.
Lua MLA (9ú heag.)Paqueo, Vicente B., agus Peter Smith. Economic-demographic Models: Uses, Limitations and Research Problems. s.n, 1974.
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