| E. N. Anderson - 2005 - 334 páginas
For instance, traditional subsistence agriculture is broadly sustainable at current population densities, but hunting is not, and modern mechanized agriculture has an uncertain ... | |
| E. N. Anderson - 2005 - 306 páginas
For instance, traditional subsistence agriculture is broadly sustainable at current population densities, but hunting is not, and modern mechanized agriculture has an uncertain ... | |
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