Basic technics in ecological farming papers presented at the 2nd international conference held by the IFOAM, Montreal, October 1-5, 1978 The Maintenance of soil fertility : exposes presentes a la 3 eme conference internationale organisee par IFOAM, Bruxelles, du 3 au 5 Septembre 1980
edited by Stuart Hill, Pierre Ott
- Basel, Switzerland Birkhauser Verlag 1982
- 365 p. ill. 24 cm.
English and French
Organic farming
Agricultural ecology
Agriculture
Soil fertility
631.5 / 84
English and French
Organic farming
Agricultural ecology
Agriculture
Soil fertility
631.5 / 84