000 00349nam a22001217a 4500
082 _a625.163
_bDOB
_cL-12, P-18
100 _aDobson, A.A.G
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245 _aRailway points and crossings
_cA. A. G. Dobson
260 _aLondon
_bThe Technical Press Ltd
_c1928
526 _a0
_b0
_c0
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650 _aMCE
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942 _2ddc
_cBK
999 _c547286
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