Humphrey, D. (Douglas), 1880-1945, <br/><br/>
Elementary mechanic :  with hydrostatics / 
D. Humphrey and Baggott E.A. 
 - xvi, 628 pages :  illustrations ;  19 cm. 
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hydrostatics.<br/>Mechanics.