000
00321nam a2200133Ia 4500
008
221123s9999 xx 000 0 und d
082
_a
621.867.7:552.517 C27D
100
_a
CGIP
245
0
_a
Design of gravel pack for tubewells
260
_b
CGIP
_a
New Delhi
_c
1967
300
_a
9 p.
650
_a
Tubewells
942
_c
R
999
_c
6355
_d
6355