US5389677B1
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1997-07-15
Method of treating wrinkles using glycalic acid
EP0278745A3
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1988-10-19
Process for the treatment of waste
FI943702L
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1995-02-13
Method for treating waste sulfuric acid
EP0469443A3
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1992-05-27
Method of treating waste
GB2206341B
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1990-11-21
Treatment of organically-based waste matter
CS295090A2
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1991-12-17
Method of waste sulphuric acid treatment
GB2305425B
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1999-04-14
Process for the recovery of waste sulphuric acid
CS265088A1
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1989-07-12
Method of waste suphuric acid treatment
PL288078A1
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1992-06-15
Method of obtaining sulfuric acid
CS291589A1
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1989-12-13
Method of waste zinc treatment
CS187886A1
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1989-06-13
Method of waste sulphuric acid's concentration
GB8809586D0
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1988-05-25
Method of treating urine
CS135689A1
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1990-10-12
Method of waste ammonium sulphate treatment
GB8703131D0
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1987-03-18
Waste treatment method
CS797086A1
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1990-04-11
Method of waste watters biological treatment
PL121063B2
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1982-04-30
Process for acid and alkaline sewage treatment
GB8715196D0
(en )
1987-08-26
Treatment of waste matter
PL293164A1
(en )
1993-07-26
Method of obtaining -aminobutyric acid
PL284651A2
(en )
1991-01-14
Method of obtaining 6-chloro-2-aminophenyl-sulfonic-4 acid
PL284650A2
(en )
1991-01-14
Method of obtaining 6-chloro-2-aminophenol-sulfonic-4 acid
PL294671A1
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1993-11-29
Method of obtaining thiazolydin-4-carboxylic acid
PL294819A1
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1993-12-13
Method of obtaining 2-methyl-4-chlorophenyloxyacetic acid
PL293135A1
(en )
1993-07-12
Method of obtaining monorphtalic acid
GB8906424D0
(en )
1989-05-04
Method of treatment
GB8904258D0
(en )
1989-04-12
Method of treatment