Technology in libraries  [kit] 

 - Washington D.C. :  National Audiovisual Center (GSA),  1968 
 - 5 sound cassette (90 min.) ; 351 slides  color (5 x 5 cm.) +  1 workbook  + 1 audio visual script + 1 script present on paper 
<br/><br/> APD no. 00238  1 sound cassete + 56 slides - unit 1, 1 sound cassette + 75 slides - unit 2, 1 sound cassette + 80 slides -  unit 3, 1 sound cassette + 63 slides - unit 4, 1 sound cassette + 77 slides - unit 5