Concrete machinery on the Chicago drainage canal

Engineering Index Backfile | 1897

Drainage ditch cleaning device for highway machinery

GONG JIANJUN | Europäisches Patentamt | 2020

5. Machinery for soil and water conservation, land development and drainage

Singh, Ramadhar | TIBKAT | 2011

Drainage in Egypt: Pipes, Envelopes and Machinery for the 21st Century

Omara, M. A. / Vlotman, W. F. / India et al. | British Library Conference Proceedings | 2000

Pipe machinery and manhole machinery

Becker, G. | British Library Online Contents | 2010