000197431 000__ 01282mam\a2200325\a\4500 000197431 001__ 197431 000197431 005__ 20220217103855.0 000197431 007__ heubmb024bbca 000197431 008__ 950201s1993\\\\cou\\\\\bb\\\f000\0\eng\d 000197431 035__ $$a(OCoLC)ocm31914123 000197431 035__ $$9AAW7310SI 000197431 035__ $$a197431 000197431 040__ $$aGPO$$cGPO 000197431 049__ $$aISEA 000197431 074__ $$a0624-H (MF) 000197431 0860_ $$aI 19.76:93-531 000197431 1001_ $$aLudwig, K. R. 000197431 24510 $$aUISO: a program for calculation of ℗©°Th-℗©♯U-℗©⁸U isochron ages$$h[microform] /$$cby Kenneth R. Ludwig. 000197431 2463_ $$aProgram for calculation of ℗©°Th-℗©♯U-℗©⁸U isochron ages 000197431 260__ $$a[Denver, CO] :$$bU.S. Dept. of the Interior, U.S. Geological Survey :$$b[Books and Open-File Reports Section, distributor],$$c1993. 000197431 300__ $$a9 leaves ;$$c28 cm. 000197431 4901_ $$aOpen-file report ;$$v93-531 000197431 500__ $$aDistributed to depository libraries in microfiche. 000197431 500__ $$aShipping list no.: 94-0790-M. 000197431 504__ $$aIncludes bibliographical references (leaf 9). 000197431 533__ $$aMicrofiche.$$b[Denver, Colo. :$$cU.S. Geological Survey,$$d1994]$$e1 microfiche : negative. 000197431 650_0 $$aUranium-thorium dating$$xComputer programs. 000197431 7102_ $$aGeological Survey (U.S.) 000197431 830_0 $$aU.S. Geological Survey open-file report ;$$v93-531. 000197431 85230 $$bdfich$$hI 19.76:$$i93-531 000197431 909CO $$ooai:library.usi.edu:197431$$pGLOBAL_SET 000197431 948__ $$ac:jb 000197431 980__ $$aBIB 000197431 980__ $$aGOV RESOURCE