Human Food Production as a Process in the Biosphere Edward S. Deevey, Jr. Scientific American, Vol. 223, No. 3, September 1970, 161-170   TO PRINT ⇒  161 162 163 164 165   TO VIEW ⇒  161 162 163 164 165   TO PRINT ⇒  166 167 168 169 170   TO VIEW ⇒  166 167 168 169 170 110509

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