000
003080000a22001330004500
245
_a
Annual rainfall and surface runoff
110
_a
Sri Lanka Irrigation Department
260
_a
Colombo
_c
1974
300
_a
80 p., ill.
500
_a
map
080
_a
627.1(548.7)
_b
S7
041
_a
EN
942
_c
BK
999
_c
103945
_d
103945