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		No cover image available Empirical foundations of educational research / Gilbert Sax. by Sax, Gilbert Material type: Text; Format: print ; Literary form: Not fiction Publication details: Estados Unidos : Prentice-Hall, c1968 Availability: Items available for loan: Bib. Gregorio Torres Quintero (1)Collection, call number: Colección General LB1028 S3.3. Place hold
		Study guide for principles of educational measurement and evaluation / Gilbert Sax. by Sax, Gilbert Material type: Text; Format: print ; Literary form: Not fiction Publication details: Belmont, Cal. : Wadsworth, 1974 Availability: Items available for loan: Bib. Gregorio Torres Quintero (1)Collection, call number: Colección General LB3051 S2.7. Place hold
		No cover image available The effects of the number of options per item and student ability on test validity and reliability by Trevisan, Michael S Sax, Gilbert, coaut [coaut.] Michael, William B [coaut.] Material type: Text; Format: print ; Literary form: Not fiction Availability: No items available.

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