Crumbling bookshelves

My bookshelf finally crumbled under the weight of it's contents this week. Luckily, my dad came to the rescue with metal reinforcements to hold up it's structure. Then came the daunting task of fitting all the books back onto the shelves. It's been 7 years since I graduated from University, so it's about time we bin the textbooks. Look at the stuff we had to get rid of (pic below).