Weather element icon vector card ventilation simple atmosphere papers defense universal ppt template

Description: Clouds, sun, trees, houses, mountains, wind power elements card ventilation icons, pencil drawings, books, clocks, saplings, test tubes and other educational and teaching related icons, dark blue gradient rectangular background, suitable for recent graduate papers, Universal ppt template for graduation report

Description: Clouds, sun, trees, houses, mountains, wind power elements card ventilation icons, pencil drawings, books, clocks, saplings, test tubes and other educational and teaching related icons, dark blue gradient rectangular background, suitable for recent graduate papers, Universal ppt template for graduation report