DK159200C
(en )
1991-02-25
METHOD OF TREATING WASTEWATER SLUDGE
PL209254A1
(en )
1979-05-07
METHOD OF PURIFICATION OF DIITROANILINE WITH NITROZOAMINE
NO151700C
(en )
1985-05-22
PROCEDURE FOR BIOLOGICAL DENITRIFICATION OF WASTE WATER
IT7847961A0
(en )
1978-02-07
PROCEDURE FOR THE TREATMENT OF SEWAGE SLUDGE
PL209011A1
(en )
1979-06-18
METHOD OF WASTE USE COMBINED WITH PRE-TREATMENT OF SEWAGE
JPS53140872A
(en )
1978-12-08
Method of utilizing waste water
JPS52139259A
(en )
1977-11-21
Modifying method of biological sludge
JPS5473468A
(en )
1979-06-12
Biological purifying method of waste water
PL210269A1
(en )
1979-07-30
METHOD OF FERMENTATION OF SEWAGE SLUDGE
JPS52139258A
(en )
1977-11-21
Modifying method of biological sludge
JPS5468055A
(en )
1979-05-31
Method of purifying organic sewage
JPS5426961A
(en )
1979-02-28
Method of dehydrating sludge
JPS53126757A
(en )
1978-11-06
Method of fermenting organic waste
JPS53126759A
(en )
1978-11-06
Method of drawing sludge
SU637333A1
(en )
1978-12-15
Method of microbiological purification of waste water
JPS53128108A
(en )
1978-11-08
Method of hardening sludge
JPS5468047A
(en )
1979-05-31
Method of purifying sewage and sludge
PL198754A1
(en )
1978-04-24
THE METHOD OF IMPROVING THE DRAINAGE OF SEWAGE SLUDGE
JPS53128109A
(en )
1978-11-08
Method of disposing of sludge
PL200425A1
(en )
1978-07-03
METHOD OF BIOLOGICAL SEWAGE TREATMENT
JPS52113048A
(en )
1977-09-21
Method of dehydrating sewage sludge
PL202549A1
(en )
1978-09-25
METHOD OF SEWAGE TREATMENT
JPS5464856A
(en )
1979-05-25
Method of treating sewage
JPS5428453A
(en )
1979-03-03
Method of treating sewage
JPS5434550A
(en )
1979-03-14
Method of continuously purifying sewage