Commodity market legend William D. Gann was invented many mathematical calculations for successful and profitable stocks, futures and commodity trading. Gann's Angle theory is a important mile stone. Anyone can involve intraday and delivery trading by using his simple mathematical calculations. No need of technical analysis knowledge. ATTN: BOOK SELLERS Visit http: //createspace.com/5383206 to buy this book at discounted price Discount code: PBXAGSKY