The Living soil science and sustainable agriculture with your guide, the Earthworm
| Formato: | Libro |
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| Lenguaje: | English |
| Publicado: |
Ames, Iowa :
Agricultural Education and Studies Iowa State University,
1993.
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| Materias: |
| Notas: | Acompanado de videocasete : Agriculture's impact on the living soil (14 min) |
|---|---|
| Descripción Física: | 1 portafolio : ilustraciones (algunas a color) + 1 videocasete (14 min.) ; sonoros color 1/2 plg. |