Arain, Ghulam Shabbir. <br/><br/>
Signalling and interlocking systems / 
Ghulam Shabbir Arain. 
 - MUET, Jamshoro :  Civil Engineering,  1983. 
 - 120p. :  ill. ; 30 cm. 
<br/><br/>Includes References. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Civil Engineering.
<br/><br/><label>Dewey Class. No.: </label> / ARA