1. Chronology of igneous events in the Precambrian of the St. Francois Mtns., S.E. Missouri: UPb ages of zircons and RbSr ages of whole rocks and mineral separates;Bickford;Geol. Soc. Am., Abstr. Prog.,1972
2. Geochronology of Precambrian rocks in the St. Francois Mountains, southeastern Missouri;Bickford;Geol. Soc. Am., Spec. Pap.,1975
3. Radiometric age determinations from the Florida Mountains, New Mexico;Brookins;Geology,1974
4. Paleozoic plutonism from southern New Mexico: Evidence from the Florida Mountains;Brookins;Geophys. Res. Lett.,1980
5. Uranium and thorium abundances and whole rock chemistry of the Florida Mountains, New Mexico: Preliminary report;Brookins,1978