00911cam a2200253 4500 758111890 TxAuBib 19920114120000.0 911011s1887||||||||||||||||||||||||eng|u gs 05000630 (OCoLC)2560560 07 TxAuBib Hill, Robert Thomas, 1858-1941. The present condition of knowledge of the geology of Texas [Book] / by Robert T. Hill. Washington, D.C. : Govt. Print. Off., 1887. 95 p. ; 24 cm. U.S. Geological Survey bulletin ; ; 45 Bibliographical foot-notes. 19920114. LQ73-507. U.S. Geological Survey bulletin.) U.S. Geological Survey bulletin ; ; 45. RV8