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World population and world food supplies
Russell, Edward J., (1954)
The resourceful earth : a response to Global 2000
Simon, Julian Lincoln, (1984)
Žiznennye resursy zemli
Matoško, Ivan V., (1989)
Agricultural production functions
Heady, Earl O., (1961)
Effects of agricultural production fluctuations on the Chinese macroeconomy
Ran, Guanghe, (1994)
Ran, Guanghe, (1995)