TY  - BOOK
AU  - Ott,Pierre
TI  - Basic technics in ecological farming: papers presented at the 2nd international Conference held by the IFOAM, Maintenance of soil fertility 
PY  - 1982///
CY  - Basel
PB  - Birkhauser Verlag
KW  - Organic farming
KW  - Congresses
KW  - Agricultural ecology
KW  - Agriculture
N1  - English and French; Includes bibliographies; Open access
ER  -