01284nam a22002777a 4500001001000000003000400010005001700014008003800031035001900069040006900088086001800157245013400175260004400309300004500353336002400398338003000422500009700452500013400549500006500683504005000748648000900798650014300807651000900950700000900959710003800968000988346OSt20170404125117.0770124s1970   dcuab   b  f000 0 eng d  a(OCoLC)2696426  aCSUbengcCSUdOWUdOCLCQdSTFdNRUdOCLCQdOCLCFdIADdTXIdGPO  aI 19.3:1294-D  aCretaceous and lower tertiary stratigraphy in northwestern Puerto Ricocby David H. McIntyre, John M. Aaron and Othmar T. Tobisch  aWashingtonbU.S Govt. Print. Off.c1970  aiii 16 pagesbillustrations, mapsc24 cm  2rdamediaatextbtxt  2rdacarrieraunmediatedbn  aAs of 07/18/2016, GPO could not validate the distribution status of this tittle for the FDLP  aPrepared in cooperation with the Commonwealth of Puerto Rico Economic Development Administration, Industrial Research Department.  aUnited States Department of the Interior, Geological survey.  aincludes bibliographical references (page 16)  2fast  0Geology, Stratigraphic0Geology, Stratigraphic0Geology0Cretaceous Geologic Period2(OCoLC)fst01355136yCretaceousyTertiaryzPuerto Rico  2fast  d1932  bDepartment of Industrial Research