Is There An Optimum Level Of Population?

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Sonraí Bibleagrafaíochta
Príomhúdar: Singer, Fred S, Ed
Formáid: Printed Book
Teanga:Undetermined
Foilsithe: New York: Mcgraw - Hill Book Co., 1971
Ábhair:
Is There An Optimum Level Of Population?

Míreanna Comhchosúla