000
00271nam a2200109Ia 4500
008
220201s1977 xx 000 0 eng d
100
_a
DUTTA B N
245
0
_a
ESTIMATING AND COSTING IN CIVIL ENGINEERING
260
_a
DELHI
_b
DUTTA S
_c
1977
300
_a
989
942
_2
ddc
999
_c
89566
_d
89566