Working Group "Integrated Control in Cereal Crops". Proceedings of the Meeting at Lleida (Spain), March 13-14, 1997. 200 pp. Edited by H.-M. Poehling & C. Borgemeister. ISBN 92-9067-097-?
Working Group "Integrated Control in Cereal Crops". Proceedings of the Meeting at Lleida (Spain), March 13-14, 1997. 200 pp. Edited by H.-M. Poehling & C. Borgemeister. ISBN 92-9067-097-?