Forkan, Ahmed Shibli. <br/><br/>
Proof of Parallelogram law of forces using Dot Product & Projection / 
Ahmed Shibli Forkan. 
 - 2nd Ed. 
 - Dhaka :  Dr. Deena P. Forkan,  [2013]. 
 - 20 p.,  20 cm. 
<br/><br/>
<br/><br/><label>ISBN: </label>978 984 33 7065 5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics.
<br/><br/><label>Dewey Class. No.: </label>510   / FOP