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Work cat.: (MX-TeUDD)293186: Singer, S. Fred. 150305, Is there an optimum level of population? /, 1971
Machine generated authority record
Work cat.: (MX-TeUDD)293186: Singer, S. Fred. 150305, Is there an optimum level of population? /, 1971
Sistema de Gestión Bibliotecaria Koha - Un desarrollo de L.B. Ulises Castrejón M. y L.I. Alejandro Castrejón M. para la Universidad Autónoma de Nayarit