000229403 000__ 00982cam\a2200301\\\45e0 000229403 001__ 229403 000229403 005__ 20210513091745.0 000229403 008__ 730807s1973\\\\dcuab\\\\b\\\f000\0\eng\\ 000229403 010__ $$a 72600374 000229403 035__ $$a(OCoLC)ocm00695364 000229403 035__ $$a229403 000229403 040__ $$aDLC$$beng$$cDLC$$dBTCTA$$dMTG$$dOCLCO 000229403 043__ $$an-us-az 000229403 049__ $$aISEA 000229403 05000 $$aQE75$$b.B9 no.1379 000229403 074__ $$a0620 000229403 08200 $$a557.3/08 s$$a551.7/01 000229403 0860_ $$aI 19.3:1379 000229403 24500 $$aRadiometric ages of igneous rocks from Pima, Santa Cruz, and Cochise Counties, southeastern Arizona,$$cby Richard F. Marvin [and others] 000229403 260__ $$aWashington,$$bU.S. Govt. Print. Off.,$$c1973. 000229403 300__ $$aiii, 27 p. :$$bill., map ;$$c24 cm. 000229403 4901_ $$aGeological survey bulletin$$v1379 000229403 504__ $$aBibliography: p. 7-9. 000229403 650_0 $$aRadioactive dating$$zArizona. 000229403 650_0 $$aIgneous rocks$$zArizona. 000229403 650_0 $$aGeology$$zArizona. 000229403 7001_ $$aMarvin, Richard F. 000229403 830_0 $$aGeological Survey bulletin ;$$v1379. 000229403 85200 $$bgen$$hQE75$$i.B9$$ino.1379 000229403 909CO $$ooai:library.usi.edu:229403$$pGLOBAL_SET 000229403 980__ $$aBIB 000229403 980__ $$aBOOK