358 Vierteljahrsschrift d. Naturf. Gesellsch. in Zürich. 1919 
11. E.T.Dumble, Some events in the Eocene History of the present cpastal area of 
the Gulf of Mexico in Texas and Mexico. The Journal of Geology, Vol, 
No. 6. Sept.-Oet. 1915 
12. — Problems of the Texas Tertiary sands. Bulletin of the Geol. Soc. America, 
1. 26. December 4, 1915 
13. — Tertiary deposits of Northeastern Mexico. Proceedings of the California 
Academy of Sciences. December 31, 1915. 
14. V.R.Garfias, The Oilregion of ERREER Mexico. Economic Geology, Vol.X. 
No, 3. April-May 1915 (with bibliography). 
15. — Eifeet of Igneous intrusions on the aceumulation of oil in northeastern 
Mexico. Journal of Geology, Vol. 30. pag. 666. 
16. B. Hartley, The Petroleum geology of the Isthmus of Tehuantepec. Economic 
Geology, Vol. XII. No. 7. rapie 1917. 
17. L.@.Huntley, The Mexican Oilfields. Transactions of the American Institute 
of Mining Engineers. Sept. 1915 (with maps and se 
18. E. Ordofiez, The Oilfields of Mexieo. Bull. A.I.M.E. Okl. 1914. 
19. J.D. Villarello, Algunas Regiones Petroliferas de Mexico. a del Instituto 
Geolögico de Mexico, No. 26. 1908. 
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