Special issue : Prospects of environment administration in 1994.Present state and course of future development of a village sewerage.
1994 ◽
Vol 23
(1)
◽
pp. 63-67
1995 ◽
Vol 24
(1)
◽
pp. 63-69
1977 ◽
Vol 42
(2)
◽
pp. 426-445
◽
1977 ◽
Vol 80
(704)
◽
pp. 593-596
1976 ◽
Vol 70
(5)
◽
pp. 206-214
◽
Keyword(s):
Keyword(s):
Keyword(s):
1995 ◽
Vol 24
(2)
◽
pp. 86-91