6,000,000,000 consumption machines.
Hinrichsen
D
D
D003247:Conservation of Natural Resources; D003710:Demography; D004467:Economics; D004777:Environment; D011153:Population; D011157:Population Dynamics; D011158:Population Growth
Carrying Capacity; Consumption; Demographic Factors; Economic Factors; Environment; Environmental Impact; Macroeconomic Factors; Natural Resources; Population; Population Dynamics; Population Growth; Population Pressure; World