[ printed instruction and specification sheets, ] books, handbooks, catalogs, and reference books dealing with engineering and electronics; [ and playing cards featuring educational material dealing with science, engineering, and the history of science for playing games and collecting ]

'book':6,11 'card':19 'catalog':8 'collect':36 'deal':12,23 'educ':21 'electron':16 'engin':14,26 'featur':20 'game':34 'handbook':7 'histori':29 'instruct':2 'materi':22 'play':18,33 'print':1 'refer':10 'scienc':25,31 'sheet':5 'specif':4

[ pre-recorded video tapes and CD ROMs dealing with engineering and electronics ]

'cd':7 'deal':9 'electron':13 'engin':11 'pre':2 'pre-record':1 'record':3 'rom':8 'tape':5 'video':4

21ST CENTURY

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