Humphrey, D. (Douglas), <br/><br/>
A shorter intermediate mechanics 
D. Humphrey and J. Topping. 
 - 2nd ed. 
 - London  Longmans  1961. 
 - 821 pages ;    22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mechanics, Analytic