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Publisher
- the mcgraw-hill companies, inc.33
- mcgraw-hill, inc./aviation week group16
- penton media, inc., penton business media, inc. and their subsidiaries11
- ubm global trade, inc.11
- dvv media international ltd.9
- aerospace media publishing8
- dow jones & company, inc.3
- reed business information ltd.3
- economist intelligence unit n.a. incorporated2