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1.
Anthropogenic pollution of Lake Hawassa, southern Ethiopia: Impact of point sources, environ... by Behailu Berehanu, Bekele Le... ISBN: 9783639337396 List Price: $71.00
2.
Residual Gases in Electron Tubes : Proceedings by Giorgi, T. A., Della Porta, P. ISBN: 9780122855504 List Price: $66.00