GULF OF MEXICO 65 



Vaughan, T. W., and Others. Weaver, P. 



1937. International aspects of oceanography, oceano- 1950. Variations in history of continental shelves. 



graphic data and provisions for oceanographic re- Bull. Am. Assn. Petrol. Geols. 34(3): 351-360. 



search. Nat. Acad. Sci., Washington, xvii, 255 pp. Wetzel, Rene, and Jean Haller. 



Vernon, R. O. 1945. Le Quaternarie de la rdgion de Tripoli (Liban). 



1951. Geology of Citrus and Levy counties, Florida. Delegation G6n6rale de France au Levant, Section 



Florida State Geol. Surv. Bull. No. 33. xii, 256 pp. Geologique. Notes et Memoirs. 4:1-48. Beyrouth. 



