000
00266nam a2200109Ia 4500
008
220201s1996 xx 000 0 eng d
100
_a
Singh, AP & Singh, SP
245
0
_a
Railways bridge & tunnels
260
_b
Satya Prakashan
_c
1996
300
_a
330
942
_2
ddc
999
_c
86406
_d
86406