STREET CLEANSING - THAMES CLEAN-UP MAKES CAPITAL PROGRESS - Peter Gibson explains how Thames21 has helped to clean up the river.

Gibson, Peter | Online Contents | 2003

Cleansing streams Clean bridge

PARK SANG JUN | European Patent Office | 2019

Clean sweep at York

British Library Online Contents | 1995

Surveying for a `clean sweep'

Wetherelt, A. / Eyre, J. M. / Institution of Mining and Metallurgy et al. | British Library Conference Proceedings | 1997

Clean sweep for precious metals: Extracting platinum group metals from street waste

British Library Online Contents | 2008