TY  - BOOK
AU  - Hill,Stuart B.
AU  - Ott,Pierre
TI  - 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 : exposés présentés à la 3 ème conférence internationale organisée par IFOAM, Bruxelles, du 3 au 5 Septembre 1980 
SN  - 3764313749
AV  - S605.5.B39 1982 
PY  - 1982///
CY  - Basel, Switzerland
PB  - Birkhäuser Verlag
KW  - Organic farming
KW  - Congresses
KW  - Agricultural ecology
KW  - Agriculture
KW  - Soil fertility
N1  - English and French
ER  -