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000064371 008__ 770823s1976\\\\iluab\\\\b\\\s00010\engm\
000064371 010__ $$a77-621592
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000064371 090__ $$aQC825.1$$b.H3
000064371 099__ $$aQC825.1 .H3
000064371 1001_ $$aHeigold, Paul C.
000064371 24513 $$aAn aeromagnetic survey of southwestern Illinois /$$cPaul C. Heigold.
000064371 260__ $$aUrbana :$$bIllinois State Geological Survey,$$c1976.
000064371 300__ $$a28 p. :$$bill., maps (1 fold. in pocket) ;$$c26 cm.
000064371 4901_ $$aCircular - Illinois State Geological Survey ; 495
000064371 500__ $$aCover title.
000064371 500__ $$aAt head of title: State of Illinois, Department of Registration and Education.
000064371 504__ $$aBibliography: p. 25-28.
000064371 650_0 $$aGeomagnetism$$zIllinois.
000064371 7101_ $$aIllinois.$$bDepartment of Registration and Education.
000064371 830_0 $$aCircular (Illinois State Geological Survey) ;$$v495.
000064371 85200 $$bgen$$hQC825.1$$i.H3
000064371 909CO $$ooai:library.usi.edu:64371$$pGLOBAL_SET
000064371 980__ $$aBIB
000064371 980__ $$aBOOK