1. Absorption tables for electron probe microanalysis;Adler;NASA TN D-2984,1965
2. Origin, age, and composition of meteorites;Anders;Space Sci. Rev.,1964
3. Iron-magnesium ratio in associated pyroxenes and olivines;Bartholome;Geol. Soc. Am.,1962
4. The system MgO-FeO-SiO2;Bowen;Am. J. Sci.,1935
5. Petrological and compositional relationships in meteorites;Craig,1964