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April
| - Event - | - Date - | - Location - |
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| SPIE Defense, Security, + Sensing 2010 | 5-9 April | Orlando, FL |
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| IPC APEX EXPO | 6-8 April | Las Vegas, NV |
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| Annual ISA International Sign Expo | 7-10 April | Orlando, FL |
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| ITEC Houston 2010 | 7 April | Houston, TX |
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| Aircraft Electronics Association | 7-10 April | Orlando, FL |
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| National School Boards Association's 70th Annual Conference & Exposition | 10-12 April | Chicago, IL |
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| NEXPO | 11-14 April | Orlando, FL |
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| National Association of Broadcasters | 12-15 April | Las Vegas, NV |
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| National Space Symposium | 12-15 April | Colorado Springs, CO |
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| National Logistics Conference - NDIA | 12-15 April | Miami, FL |
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| RFID Live | 14-16 April | Orlando, FL |
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| Anti-Aging Medicine | 15-17 April | Orlando, FL |
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| Champion Sports and Supplement Expo | 16-17 April | Orlando, FL |
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| Infosec World | 17-23 April | Orlando, FL |
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| Agent Expo | 19-21 April | Orlando, FL |
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| IEEE PES presents Transmission and Distribution Expo | 20-22 April | New Orleans, LA |
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| Digital Dealer Conference | 20-22 April | Orlando, FL |
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| MRO Americas | 20-22 April | Phoenix, AZ |
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| TACTICAL C4 CONFERENCE | 20-21 April | Atlanta, GA |
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| AIIM EXPO | 20-22 April | Philadelphia, PA |
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| AD:TECH 2010 | 20-22 April | San Francisco, CA |
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| AFCEA Spring Intelligence Symposium | 21-22 April | Washington DC |
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| MARINE SOUTH | 21-22 April | Camp Lejeune, NC |
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| BIOMEDevice | 21-22 April | Boston, MA |
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| Mid Atlantic Design | 21-22 April | Philadelphia, PA |
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| NASSTRAC Logistics Conference and Exhibition | 25-25 April | Orlando, FL |
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| Risk and Insurance Management Society | 25-29 April | Boston, MA |
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| Stareast 2010 | 25-30 April | Orlando, FL |
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| Interop | 25-30 April | Las Vegas, NV |
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| Space Ops Conference | 26-30 April | AL |
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| Coal Prep Exhibition and Conference | 26-29 April | Lexington, KY |
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| IDEA10 | 27-29 April | Miami, FL |
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| Design & Manufacturing South | 28-29 April | Charclotte, NC |
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| AOTA Annual Conference & Expo | 29 April - 1 May | Orlando, FL |
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