00361nam a22001453 44500001000700000100004100007101000800048102000700056200003500063210002500098215001000123225005100133606001300184675001800197116559 a20130928 frey50 arus aRU aÈkologiâ v mire tehnologij aMoskvacZnanied1987 a64 s. aSer. "Novoe v žizni, nauke, tehnike"h8/1987 aEcologie a502.172=161.1