000006404 000__ 00981cam\a2200253Wi\4500
000006404 001__ 6404
000006404 005__ 20210512010201.0
000006404 008__ 760726n1951\\\\ilu\\\\\\\\\\\00000\eng\d
000006404 035__ $$a(OCoLC)ocm02335857
000006404 035__ $$9AAA6590SI
000006404 035__ $$a6404
000006404 040__ $$aTXU$$cTXU$$dISE
000006404 049__ $$aISEA
000006404 090__ $$aQE105$$b.A45 no. 175
000006404 099__ $$aQE105 .A45 no. 175
000006404 1001_ $$aLeighton, Morris M.$$q(Morris Morgan),$$d1887-1971.
000006404 24510 $$aMineral resource research and activities of the State Geological Survey, 1950-1951 /$$cby M. M. Leighton.
000006404 260__ $$aUrbana,$$c1951.
000006404 300__ $$a38 p. :$$billus. ;$$c23 cm.
000006404 4901_ $$aIllinois.$$bState Geological Survey.$$tCircular ;$$vno. 175
000006404 500__ $$a"Preprinted from the annual report of the Chief to the Director, Dept. of Registration and Education, for fiscal year 1950-1951."
000006404 650_0 $$aGeological surveys$$zIllinois.
000006404 650_0 $$aMines and mineral resources$$zIllinois.
000006404 830_0 $$aCircular (Illinois State Geological Survey) ;$$vno. 175.
000006404 85200 $$bgen$$hQE105$$i.A45$$ino.175
000006404 909CO $$ooai:library.usi.edu:6404$$pGLOBAL_SET
000006404 980__ $$aBIB
000006404 980__ $$aBOOK