00867cam a22002531  4500001001300000003000400013005001700017008004100034010001700075035001900092040001800111042001200129050001500141100005400156245016900210260002900379300001800408490003800426504002800464650002800492650002800520700004800548999001700596gs 47000023 DLC20260227111352.0750812s1946    xx            000 0 eng    ags 47000023   a(OCoLC)1538694  aDLCcViWdDLC  apremarc00aQE770b.G71 aGreacen, Katherine Fielding,d1913-      ,ecomp.10aSilurian invertebrate fossils from Illinois in the Thomas A. Greene Memorial museum at Milwaukee-Downer college,ccompiled by Katherine F. Greacen and John R. Ball.  a[Milwaukee, Wis.,c1946]  a61 p.c22 cm.0 aMilwaukee-Downer college bulletin  aBibliography: p. 57-61. 0aPaleontologyySilurian. 0aPaleontologyzIllinois.1 aBall, John Rice,d1881-      ,ejoint comp.  c28126d28126