manuals, workbooks or instructional materials for adult professional development in leadership, sales, team building, group dynamics, interpersonal skills, account management, proposal writing, coaching, persuasion or other business topics

'account':19 'adult':7 'build':14 'busi':27 'coach':23 'develop':9 'dynam':16 'group':15 'instruct':4 'interperson':17 'leadership':11 'manag':20 'manual':1 'materi':5 'persuas':24 'profession':8 'propos':21 'sale':12 'skill':18 'team':13 'topic':28 'workbook':2 'write':22

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