Prospect of environmental administration in 1999. Present state and problems in the administration of water supply .
1999 ◽
Vol 28
(1)
◽
pp. 28-31
1998 ◽
Vol 27
(1)
◽
pp. 24-27
1995 ◽
Vol 24
(1)
◽
pp. 44-48
1998 ◽
Vol 27
(1)
◽
pp. 67-70
1991 ◽
Vol 20
(1)
◽
pp. 45-50
1995 ◽
Vol 24
(1)
◽
pp. 20-25