Special issue : 'view of environmental administration in 1991.Present status and problems of water quality conservation administration.
1991 ◽
Vol 20
(1)
◽
pp. 19-23
1991 ◽
Vol 20
(1)
◽
pp. 30-33
1995 ◽
Vol 24
(1)
◽
pp. 15-19
1991 ◽
Vol 20
(1)
◽
pp. 57-60
Keyword(s):
1992 ◽
Vol 21
(1)
◽
pp. 11-15
1990 ◽
Vol 19
(1)
◽
pp. 19-23
1991 ◽
Vol 20
(1)
◽
pp. 61-65
Keyword(s):
1986 ◽
Vol 89
(814)
◽
pp. 1084-1089
1994 ◽
Vol 23
(4)
◽
pp. 200-205
Keyword(s):
2011 ◽
Vol 20
(1)
◽
pp. 12-19
◽