erc: who: Maxon, Lloyd Melvin what: The Relationship of Certain Mental Factors, Reading Factors, Aptitudes, and Situational Factors to Achievement in Selected Air Force Technical Courses when: 19700600 where: https://digital.library.unt.edu/ark:/67531/metadc164407/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://digital.library.unt.edu/ark:/67531/