00787cam a22002411  4500001001300000003000400013005001700017008004100034010001700075035001900092040001900111042001200130050002200142100005300164245007200217260005100289300002400340410007100364490003000435650003700465650002600502999001700528gs 33000403 DLC20260227111338.0790609s1921    wiua     c   s000 0 eng    ags 33000403   a(OCoLC)5051053  aDLCcTxCMdDLC  apremarc00aQE179b.A2 no. 631 aThwaites, F. T.q(Fredrik Turville),d1883-1961.10aEducational collection of Wisconsin rocks,cby Fredrik T. Thwaites.  aMadison, Wis.,bPublished by the state,c1921.  a33 p. incl. tables.20aWisconsin Geological and Natural History Survey.tBulletinvno. 630 aEducational seriesvno. 7 0aRocksxCatalogs and collections. 0aPetrologyzWisconsin.  c27053d27053