https://biblioteca.iapg.org.ar/cgi-bin/koha/opac-search.pl?idx=&q=an%3A18165&sort_by=relevance&format=rss 2 0 20 ISBN: https://biblioteca.iapg.org.ar/cgi-bin/koha/opac-detail.pl?biblionumber=142043 By Vassilev, Stanislav V. | Vassileva, Christina G..
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15 p.

]]> Place hold on Comparative chemical and mineral characterization of some Bulgarian coals

]]> https://biblioteca.iapg.org.ar/cgi-bin/koha/opac-detail.pl?biblionumber=142043 ISBN: https://biblioteca.iapg.org.ar/cgi-bin/koha/opac-detail.pl?biblionumber=165440 By Vassilev, Stanislav V. | Vassileva, Christina G..
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15 p.

]]> Place hold on Methods for characterization of composition of fly ashes from coal-fired power stations

]]> https://biblioteca.iapg.org.ar/cgi-bin/koha/opac-detail.pl?biblionumber=165440