https://pictures.abebooks.com/isbn/9781572229099-us.jpg Geometric Formulas@By: S B Kizlik@Publisher: @QuickStudy Reference Guides@Print ISBN: 9781572229099, 1572229098@eText ISBN: 9781423206279, 1423206274@Edition: 1st@Pages: 6@Format: PDF@Available from $ 6.95 USD@SKU: 9781423206279 Ebooks here: https://ouo.io/82BtNi