Transportation infrastructure :environmental challenges in Poland and neighboring countries : Proc.of the NATO Advanced research workshop on regional challenges to improve a deteriorated transportation infrastructure within Poland and its neighboring countries,Wroclaw,Oct.24-26,1994 / Ed.: R. M. Gutkowski, J. Kmita, 1996. - XVI,472 p. p. - Текст : непосредственный.
Restoration of forests : Environmental challenges in Central and Eastern EuropeProc.of the NATO advanced research workshop on science and technology to save and better utilize Central and Eastern Europe's forests,Saulberg,July 15-19, 1996 / сост.ed. R. M. Gutkowski, сост.ed. T. Winnicki, 1997. - XV,461 p. p. - Текст : непосредственный.