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	1.	Image from OpenLibrary	Definition of psychology Keller Fred S an introduction to psychological systems by Keller Fred S Series: Century psychology series, ed by Richard M Elliott Material type: Text; Format: print regular print ; Literary form: Not fiction Language: English Publication details: 1937 Availability: Items available for loan: Arts Library (1)Collection, call number: S G71. Place hold Save to lists Add to cart (remove)
	2.	Image from OpenLibrary	Principles of psychology Keller Fred S; Schoenfeld William N a systematic text in the science of behavior by Keller Fred S Schoenfeld William N Series: Century psychology series, ed by Richard M Elliott; 21 Material type: Text; Format: print regular print ; Literary form: Not fiction Language: English Publication details: 1950 Availability: Items available for loan: Arts Library (1)Collection, call number: S J02. Place hold Save to lists Add to cart (remove)
	3.	Image from OpenLibrary	Definition of psychology: An introduction to psychological systems by Keller Fred S Series: The century psychology series Material type: Text; Format: print Language: English Publication details: New York, USA D Appleton - Century Company 1937 Availability: Items available for loan: Department of Education Library (1)Collection, call number: 150.19, KEL. Place hold Save to lists Add to cart (remove)
	4.	Image from OpenLibrary	Learning : Reinforcement theory by Keller Fred S Series: Dubleday Papers in Psychology Material type: Text; Format: print Language: English Publication details: Garden City, USA Doubleday and Company 1954 Availability: Items available for loan: Department of Education Library (1)Collection, call number: 370.1544, KEL. Place hold Save to lists Add to cart (remove)
	5.	Image from OpenLibrary	Definition of psychology: An introduction to psychological systems by Keller Fred S Material type: Text; Format: print Language: English Publication details: New York, USA Appleton-Century-Crofts 1965 Availability: Items available for loan: Department of Education Library (1)Collection, call number: 150, KEL. Place hold Save to lists Add to cart (remove)