كتاب رائع
Basic Machines and How They Work Naval Education And Training Program
وده اللينك بتاعه على موقف امازون
http://www.amazon.com/Basic-Machines-How-They-Work/dp/0486217094/ref=sr_1_1?s=books&ie=UTF8&qid=1387278810&sr=1-1&keywords=Basic+Machines+and+How+They+Work+Naval+Education+And+Training+Programز
وده رابط التحميل بتاعه
http://www.mediafire.com/view/sfwvszqo587cmsm/Basic%20Machines%20and%20How%20They%20Work%20Naval%20Education%20And%20Training%20Program%20.pdf
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