Ettlinger, H. J. <br/><br/>
The calculus / 
H.J.Ettlinger, M.B.Porter. 
 - New York :  The Dryden Press,  1942. 
 - xiii, 317 p. :  ill. ;  21 cm. 
<br/><br/>Includes bibliograpical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculus.
<br/><br/><label>LC Class. No.: </label>QA300  / E87 1942