02a0010723;0-89792-101-1;¥19.50;20011205d1984 ekmy0engy01;eng;a z 000yy;r;Taxonomy of specimens of the Pennsylvanian age Marattialean Fern Psaronius from Ohio and Illinois;James E. Mickle;Illinois;[s.n.];1984;64 p.;ill.;Scientific Paper;Illinois State Museum;no.19;2001b;aScientific Paper ; fIllinois State Museum ; vno.19;a573;Mickle;James E.;101;443423;P;160.6;Sci2;v19 ; r¥19.50;a04;b1;cP