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	1.	Image from Amazon.com	Supplement to a survey of overhead projectors / A. H. Crocker. by Crocker, A. H Educational Foundation for Visual Aids (Great Britain) Series: National Committee for Audio-Visual Aids in Education. Experimental Development Unit. Report ; no. 6 Material type: Text Publication details: London : National Committee for Audio-Visual Aids in Education; E ducational Foundation for Visual Aids, 1969 Availability: Items available for loan: College of Education and External Studies Library - Closed Access (2)Call number: P 371.3352 C RO, ... Place hold Save to lists Add to cart (remove)
	2.	Image from Amazon.com	Supplement to a survey of overhead projectors / A. H. Crocker. by Crocker, A. H Educational Foundation for Visual Aids (Great Britain) Series: National Committee for Audio-Visual Aids in Education. Experimental Development Unit. Report ; no. 6 Material type: Text Publication details: London : National Committee for Audio-Visual Aids in Education; E ducational Foundation for Visual Aids, 1969 Availability: No items available. Save to lists Add to cart (remove)
	3.	Image from Amazon.com	Supplement to a survey of overhead projectors / A. H. Crocker. by Crocker, A. H Educational Foundation for Visual Aids (Great Britain) Series: National Committee for Audio-Visual Aids in Education. Experimental Development Unit. Report ; no. 6 Material type: Text Publication details: London : National Committee for Audio-Visual Aids in Education; E ducational Foundation for Visual Aids, 1969 Availability: No items available. Save to lists Add to cart (remove)