{ "item_title" : "Trigonometric Functions and Complex Numbers", "item_author" : [" Yang Desheng "], "item_description" : "Trigonometric Functions and Complex Numbers covers the followings areas in the International Mathematical Olympiad (IMO) and other mathematical competitions. The contents are essential for the IMO. A good help for students who want to improve in these areas.", "item_img_path" : "https://covers1.booksamillion.com/covers/bam/1/93/813/476/1938134761_b.jpg", "price_data" : { "retail_price" : "70.00", "online_price" : "70.00", "our_price" : "70.00", "club_price" : "70.00", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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