Paleontologic and stratigraphic relations of phosphate beds in Upper Cretaceous rocks of the Cordillera Oriental, Colombia

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245 0 0 ‡aPaleontologic and stratigraphic relations of phosphate beds in Upper Cretaceous rocks of the Cordillera Oriental, Colombia / ‡cby Edwin K. Maughan, U.S. Geological Survey, and Francisco Zambrano O. ... [et al.] ; Instituto Nacional de Investigaciones Geológico-Mineras.
260 ‡a[Reston, Va.] : ‡bU.S. Geological Survey, ‡c[1979]
300 ‡aiii, 97 p. : ‡bill., maps ; ‡c27 cm.
490 0 ‡aProject report: Colombian Investigations ; ‡v(IR)CO-39.
490 0 ‡aOpen file report / U.S. Geological Survey ; ‡v79-1525.
500 ‡aFive illustrations and two maps on folded leaves in pockets.
504 ‡aBibliography: p. 93-97.
538 ‡aMode of access: Internet.
650 0 ‡aPhosphates ‡zColombia ‡zCordillera Oriental.
650 0 ‡aPaleontology ‡zColombia ‡yCretaceous.
650 0 ‡aGeology, Stratigraphic ‡yCretaceous.
700 2 0 ‡aZambrano O., Francisco.
700 1 0 ‡aMaughan, Edwin K., ‡d1926-1995.
710 2 0 ‡aGeological Survey (U.S.)
710 2 0 ‡aInstituto Nacional de Investigaciones Geológico-Mineras.
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