furniture - How can I find the part to fix this bookshelf? - Home Improvement Stack Exchange

I have a bookshelf with a broken part, but don't know what this kind of bookshelf is called or what the part is called. The bookshelf has glass doors that slide up and in: eFurnitureMart - 100% Furniture Financing, Free Shipping, Discounted Furniture, Discount Coupons, New Arrivals, Clearance Center, Weekly Deals - eFurniture Mart - http://www.eFurnitureMart.com
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