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workbook ['wɜːkbʊk] n
comp., MS kitob (In a spreadsheet program, a file containing a number of related worksheets)
 English thesaurus
Workbook ['wɜːkbʊk] abbr.
abbr., file.ext. .wkb (file name extension, WordPerfect)
workbook
: 3 phrases in 1 subject
Microsoft3