800,347 ECOLOGICAL [Ecological Approaches on Environment and Health in Urban Areas in Central and Eastern Europe Katowice/Cracow, Poland 9-12 December 1992] : book of abstracts : (in alphabetical order) : this book contains only abstracts received by the Organising Commitee, under the form submited by the authors. Several abstracts are not included due to poor technical quality of the copies. - [b.m. : b.w.], 1992?. - [258] k. ; 29 cm