| 21. 
  |  | Title: Water Virology 1984 by W.O.K. Grabow
 ISBN: 0080336590
 Publisher: Pergamon Press
 Pub. Date: December, 1985
 List Price: $44.00
 Amazon.com Price: $44.00
 | 
| 22. 
  |  | Title: Water Quality International '94 Part 2: Watermatex '94 - Systems Analysis and Computing in Water Quality Management by D. Ballay, T. Asano, R. Bhamidimarri, K.K. Chin, A.G. Dahlber, A.G. Dahlberg, W.O.K. Grabow, S. Ohgaki, E.J. Zotter, A. Milburn
 ISBN: 0080425488
 Publisher: Pergamon Press
 Pub. Date: 01 December, 1994
 List Price: $112.50
 Amazon.com Price: $112.50
 | 
| 23. 
  |  | Title: Water Quality International '96 Part 2 by D. Ballay, T. Asano, R. Bhamidimarri, K.K. Chin, W.O.K. Grabow, E.R. Hall, S. Ohgaki, D. Orhon, A. Milburn, C.D. Purdon
 ISBN: 0080430864
 Publisher: Pergamon Press
 Pub. Date: 01 October, 1996
 List Price: $258.00
 Amazon.com Price: $258.00
 | 
| 24. 
  |  | Title: Water Quality International '96 Part 6: Chemical, Petrochemical and Hazardous Waste Management by D. Ballay, T. Asano, R. Bhamidimarri, K.K. Chin, W.O.K. Grabow, E.R. Hall, S. Ohgaki, D. Orhon, A. Milburn, C.D. Purdon
 ISBN: 0080430899
 Publisher: Pergamon Press
 Pub. Date: 01 January, 1997
 List Price: $130.00
 Amazon.com Price: $130.00
 | 
| 25. 
  |  | Title: Water Quality International '94: Anaerobic Digestion, Sludge Management, Appropriate Technologies by D. Ballay, T. Asano, R. Bhamidimarri, K.K. Chin, A.G. Dahlberg, W.O.K. Grabow, S. Ohgaki, K. Zotter, A. Milburn, E.J. Izod
 ISBN: 0080426298
 Publisher: Pergamon Press
 Pub. Date: October, 1995
 
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