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Paths for freedom and progress
SOCIETY AND POWER
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ECONOMY
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ECOLOGY
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SUSTAINABLE TECNOLOGY
SUSTAINABLE TECNOLOGY
14/02/2024 - Nuclear War
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15/04/2021 - Urban Fish Ponds: Low-tech Sewage Treatment for Towns and Cities
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08/09/2019 - SURVIVAL in the tropical rainforest
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30/08/2019 - HOUSING; How they made a timberhouse
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18/06/2018 - AGRICULTURE: Sloping Agro-Livestock Technology (SALT-2):
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19/06/2018 - ENERGY; How to make Activated Carbon
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19/06/2018 - ENERGY: Small owen for making charcoal
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19/06/2018 - AGRICULTURE: Compost
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19/06/2018 - AGRICULTURE: SALT-1 How to plant on slopes
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