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workbook

['wɜːkbʊk] n
comp., MS کتاب کار (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
: 7 phrases in 1 subject
Microsoft7