The population equation: balancing what we need with what we have.
Dahl
Richard
R
D000397:Air Pollution; D003141:Communicable Diseases; D003247:Conservation of Natural Resources; D019049:Developed Countries; D003906:Developing Countries; D005523:Food Supply; D017752:Greenhouse Effect; D006801:Humans; D011158:Population Growth; D014881:Water Supply