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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.

Detalles de publicación

  • Editor: California Polytechnic State University
  • Dewey Decimal: 636.5
  • Librería ECHO: 636.5 HEW