| © 1983 International PC Owners
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| © 1983 Mirror Images Software, Inc.
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| © 1983 International PC Owners
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| © 1983 David W. Gulliksen
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| © 1983 International PC Owners
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| © 1983 Pryority Software
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| © 1983 MOPS Computer Systems, Inc.
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| © 1983 Spinnaker Software Corporation
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| © 1983 FriendlySoft
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| © 1983 FriendlySoft
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| © 1983 Sierra On-Line, Inc.
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| © 1983 Strategic Simulations, Inc.
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| © 1983 Atarisoft
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| © 1983 Larry E. Jordan
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| © 1983 Temple Software, Inc.
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| © 1983 Microsoft
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| © 1983 Norland Software
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| © 1983 Norland Software
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| © 1983 Mirror Images Software, Inc.
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| © 1983 Executive Software Programming
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| © 1983 Melbourne House
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| © 1983 International PC Owners
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| © 1983 Orion Software Inc
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| © 1983 Orion Software, Inc.
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| © 1983 Simon & Schuster Interactive
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| © 1983 Atarisoft
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| © 1983 IBM
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| © 1983 IBM
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| © 1983 Indecs Services, Inc
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| © 1983 Spinnaker Software Corporation
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| © 1983 Unknown
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| © 1983 Strategic Simulations, Inc.
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| © 1983 Cornerstone Computer Company
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| © 1983 Broderbund Software, Inc.
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| © 1983 International PC Owners
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| © 1983 IBM
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| © 1983 Micro Fun
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| © 1983 IBM
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| © 1983 Windmill Software
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| © 1983 Atarisoft
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| © 1983 Atarisoft
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| © 1983 Electronic Arts, Inc.
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| © 1983 Wherner Barnes & Brian Howarth
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| © 1983 Mattel Electronics
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| © 1983 International PC Owners
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