Hodges, Douglas John. <br/><br/>
Optical distance measurement 
/ [by] D. J. Hodges and J. B. Greenwood. 
 - London  : Butterworths  1971. 
 - 117 p.  : ill.  ; 23 cm. 
<br/><br/><label>ISBN: </label>0408700920 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Distances--Measurement.<br/>Optical instruments.<br/>Surveying--Instruments.
<br/><br/><label>LC Class. No.: </label>TA601  / .H63 1971