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1.	Comparison of the Cretaceous-Tertiary boundary impact events and the 0.77-Ma Australasian tektite event : relevance to mass extinction / by E.C.T[...] Chao, E. C. T.; Geological Survey (U.S.) [Reston, Va.?] : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : For sale by Map Distribution, 1993. QE75 .B9 no.2050 \| Map It \| Detailed record - Similar records
2.	Origin and ages of mineralization of Bayan Obo, the world's largest rare earth ore deposit, Inner Mongolia, China [microform] / E.C.T. Chao ... [[...] Chao, E. C. T.; Geological Survey (U.S.) [Denver, Colo.?] : U.S. Dept. of the Interior, U.S. Geological Survey, [1990?] I 19.76: 90-538 \| Detailed record - Similar records
3.	Recommended procedures and methodology of coal description / by E.C.T. Chao, J.A Minkin, and C.L. Thompson. Chao, E. C. T. [Washington] : U.S. Dept. of the Interior, Geological Survey, 1983. QE75 .C5 no.894 TP325 \| Map It \| Detailed record - Similar records
4.	The sedimentary carbonate-hosted giant Bayan Obo REE-Fe-Nb ore deposit of Inner Mongolia, China : a cornerstone example for giant polymetallic or[...] Chao, E. C. T. Washington, DC : U.S. Geological Survey, 1996. QE75 .B9 no.2143 \| Map It \| View e-resource \| Available Online \| Detailed record - Similar records

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