01078nam a22002537a 4500710003100000001001000031003000400041005001700045008003200062035001900094040002300113086001800136100004100154245011500195260004500310300004100355336002600396337002800422338002700450500023200477504005400709650003900763651002200802  aGeological Survey (U.S.)  000986764OSt20200624062631.0780204s1969 dcua b f000 0 eng d  a(OCoLC)3603803  aCSUbengcCSUdOCL  aI 19.3:1274-O  aBriggs, Reginald Peterd1929eauthor10aChanges in Stratigraphic nomenclature in the Cretaceous system, east-central Puerto Ricocby Reginald P. Brigs  aWhashingtonbU.S.Govt. Print. Off.c1969  aiii, 31 pagesbillustrationsc24 cm.  2rdacontentatextbtxt  2rdamediaaunmediatedbn  2rdacarrieravolumebnc  aAs of 07/01/2016, GPO could not validate the distribution status of this little for the FDLP. 

"Prepared in cooperation with the Commonwealth of Puerto Rico Economic Development Administration, Industrial Research Department.   aIncludes bibliographical references (pages 29-31) 0aGeology, StratigraphicyCretaceous 02fastaPuerto Rico