1. 30-second elements : the 50 most significant elements, each explained in half a minute /: the 50 most significant elements, each explained in half a minute. (2013) Other Names: Scerri, Eric Record Type: Book Extent: 1 online resource (247 pages), illustrations (black and white, and colour) View Content: Available online (eLD content is only available in our Reading Rooms) ↗