Keywords: Green engineering icon - Noun Project 12323.svg The Noun Project http //thenounproject com/noun/green-engineering/ icon-No12323 The Noun Project http //thenounproject com/AdamGale/ Adam Gale 2013 Valid SVG Cc-zero LicenseReview http //thenounproject com/noun/green-engineering/ icon-No12323 The Noun Project Liamdavies 2013-10-27 SVG icons from The Noun Project |