000
00291nam a2200109Ia 45e0
008
181001s1977 xx 000 0 und d
100
_a
Banga & sharma
245
0
_a
Mechanical estimating & costing
260
_a
Delhi
_b
Khanna pub.
_c
1977
300
_a
207
942
_2
ddc
_c
BK
999
_c
2707
_d
2707