Douglas Siemonsma
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Douglas Siemonsma’s tips for planning your first hiking adventure
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Douglas Siemonsma Provides Innovative Fundraising Strategies for Nonprofits
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Douglas Siemonsma on Measuring the Impact of Your Fundraising Campaigns
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Douglas Siemonsma: The Impact of Technology on Navy Piloting
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Douflas Siemonsma’s Insights on Military Logistics
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