Donald Castillo

  • 812 Presentations

Member since: December 27, 2017

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Why making fun in life is im...
Entertainment & Fun
436 Views 6 years ago pptx
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Importance of Entertainment ...
Entertainment & Fun
514 Views 6 years ago pptx
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Smoking in public places sho...
Health & Medicine
427 Views 6 years ago pptx
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Introduction to Digital Phot...
Entertainment & Fun
419 Views 6 years ago pptx
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Importance of Verichip in El...
Technology
3.1k Views 21 6 years ago pptx
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Introduction to Holography
Technology
416 Views 6 years ago pptx