Business and environmental changes in Poland / Leszek PREISNER // W: EUROECO 2000 : holistic concept of training for the promotion of sustainable development focused on European Integration for better quality of environment and human life : international conference : Kraków 15–16\textsuperscript{th} September, 2000 : book of summaries / eds. Aleksandra Wagner, Jan W. Dobrowolski. — Kraków : Wydawnictwo „jak” Andrzej Choczewski, 2000. — S. 49

Conclusions and recommendations after co-chairing the workshop 2 – global and local environmental problems / L. PREISNER // Polish Journal of Environmental Studies ; ISSN 1230-1485. — 2000 vol. 9 suppl. 2, s. 62–63. — EUROECO 2000 : holistic concept of training for the promotion of sustainable development focused on European intregration for better quality of environment and human life : proceedings of the international conference : Cracow, Poland, 15th–16th September, 2000