IOBC-WPRS Bulletin Vol. 21 (1) 1998

Commission "Integrated Production Guidelines and Endorsement".
Integrated Production in Europe: 20 years after the declaration of Ovrannaz. 41 pp.
Edited by: E.F. Boller, J. Avilla, J.P. Gendrier, E. Jörg & C. Malavolta.
ISBN 92-9067-095-9