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2
-
Production without destruction : a manual for trainers and a reference book for those practising natural or organic farming / Helen L. Vukasin...[et al.] ; [ill. by Joel Chikware and Loes Roos].
- Natural farming network,
- cop. 1995.
- Harare :
-
Natural pest & disease control / Henry Elwell and Anita Maas.
- Natural farming network,
- 1995.
- Harare :