Doerfler, Ronald W. <br/><br/>
Dead reckoning :  calculating without instruments / 
Ronald W. Doerfler. 
 - Houston :  Gulf Pub. Co.,  c1993. 
 - ix, 182 p. ;  23 cm. 
<br/><br/>
<br/><br/><label>ISBN: </label>0884150879 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MCE<br/>Ready-reckoners.
<br/><br/><label>Dewey Class. No.: </label>513.9  / DOE