Seven billion and countingde Michael AndreggMateriasOverpopulationJuvenile literaturePopulationPopulation, juvenile literatureEdiciones (1)Seven billion and counting (2013)Twenty-First Century Books · inglés · ISBN 9780761367154Más obras de Michael AndreggOOn the causes of warOn the causes of war2007Democratization of IntelligenceVer todas las obras de Michael Andregg →