01000nam a22002657a 4500710005400000999001900054001001000073003000400083005001700087007000600104008003300110035002100143040003000164049003400194074000900228086001800237092001800255100002500273245019100298264009200489500005700581504005100638650003300689942001200722  aGeological Survey (U.S.)  eissuing body.9227708  c257895d257895000980514OSt20200624062631.0cr bn140926s1966 dcua ob f000 0 eng c  a(OCoLC)891382572  aCOPbengcCOPdOCLCOerda  aBiblioteca Encarnacion Valdes  a0620  a| 19.3:1244-C  a| 19.3:1244-C  d1922-qArthur Edward  aCretaceous and Tertiary rocks in the Corozal quadrangle, northern Puerto Rico cby Arthur E. Nelson ; prepared in cooperation with the Economic Development Administration of Puerto Rico.  a[Washington, D.C.]bUnited States Department of the Interior, Geological Survey, c1966  aTitle from title screen (viewed September 15, 2014).  aIncludes Bibliographical references (page 20). 09101964aGeologyzPuerto Rico  2ddcc17