Author: Rossiĭskai͡a nauchno-prakticheskai͡a konferent͡sii͡a "Optimizat͡sii͡a prirodopolʹzovanii͡a i okhrana okruzhai͡ushcheĭ sredy I͡Uzhno-Uralʹskogo regiona" (1998 Orenburg, Russia)