Basic technics in ecological farming :

Basic technics in ecological farming : papers presented at the 2nd international Conference held by the IFOAM, Maintenance of soil fertility / edited by Stuart Hill, Pierre, Ott. - Basel : Birkhauser Verlag, 1982. - 365 p. : ill. ; 24 cm.

English and French.

Includes bibliographies.

Open access.

8214636


Organic farming--Congresses.
Agricultural ecology--Congresses.
Agriculture--Congresses.