01389nam a22003137a 4500710003900000999001900039001001000058003000400068005001700072008003200089035001900121040002300140049003400163086001800197092001800215100004800233245011500281260004500396300004100441336002600482337002800508338002700536500023200563504005400795650004700849651003000896942003700926952011200963  aGeological Survey (U.S.)  9227708  c257215d257215000986764OSt20200624062631.0780204s1969 dcua b f000 0 eng d  a(OCoLC)3603803  aCSUbengcCSUdOCL  aBiblioteca Encarnacion Valdes  aI 19.3:1274-O  aI 19.3:1274-O  965429aBriggs, 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) 09101970aGeology, StratigraphicyCretaceous 02fast9294023aPuerto Rico  2ddcc6hI 19.3:1274-Om1274-On0  00102ddc4070a10b10c5d2017-02-09l0oI 19.3:1274-OpI 19.3:1274-Or2017-02-09 00:00:00w2017-02-09y6