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• Rahmani.Jahanbakhsh The Reliability and Validity of Raven's Progressive Matrics Test Among the Studentsof Azad Khorasgan University [ Vol.10, Issue 34 - Spring Year 1387]
• Rajaee.Ali Reza To Investigate Mathematical Cognitive Abilities (Spatial and Numerous) and Their CorrelationWith Educational Development, Mental Age and Gender [ Vol.10, Issue 34 - Spring Year 1387]
• Rekabdar.Ghasem To Compare the Mathematics Anxiety Based on Perfectionism Typology Among Khoramshahr High School Prep Students [ Vol.10, Issue 35 - Spring Year 1387]
• Rohani.Abbas The Relationship between the Religion andHappiness & Marital Satisfaction in the IAU of Mobarekeh Branch [ Vol.10, Issue 35 - Spring Year 1387]