Through sustained agricultural food production using ducks, fish, and crops this experiment sets out to be a means to love the poor. A system was built where ducks, fish, and crops could feed off each other's wastes. The plants and ducks grew well but there was not enough oxygen for the fish.
出版物详细信息
- 出版者: California Polytechnic State University
- Dewey Decimal: 636.5
- ECHO 图书馆: 636.5 HEW