ID 188955294 © TheImg | Megapixl.com
Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
abstract academic accessory area art biology book chemistry class college composition concept conceptual course curriculum discipline education element exact formal french general history icon isolated items kit knowledge language learning lesson mathematics metaphor natural notion physical primary school science scientific secondary set study subject supply teaching textbook university web