000			00453nam a2200157 4500
005			20260225063512.0
082			_bARA
100			_aArain, Ghulam Shabbir.
245			_aSignalling and interlocking systems / _cGhulam Shabbir Arain.
260			_aMUET, Jamshoro : _bCivil Engineering, _c1983.
300			_a120p. : _bill. ; 30 cm.
504			_aIncludes References.
650			_aCivil Engineering.
700			_aChachar, Ghulam Akbar.
942			_cTHESES
999			_c53809 _d53809